Mental illness

Mental illness, also called mental health disorders, refers to a wide range of mental health conditions — disorders that affect your mood, thinking and behavior. Examples of mental illness include depression, anxiety disorders, schizophrenia, eating disorders and addictive behaviors.

Many people have mental health concerns from time to time. But a mental health concern becomes a mental illness when ongoing signs and symptoms cause frequent stress and affect your ability to function.

A mental illness can make you miserable and can cause problems in your daily life, such as at school or work or in relationships. In most cases, symptoms can be managed with a combination of medications and talk therapy (psychotherapy).

Symptoms

Signs and symptoms of mental illness can vary, depending on the disorder, circumstances and other factors. Mental illness symptoms can affect emotions, thoughts and behaviors.

Examples of signs and symptoms include:

• Feeling sad or down
• Confused thinking or reduced ability to concentrate
• Excessive fears or worries, or extreme feelings of guilt
• Extreme mood changes of highs and lows
• Withdrawal from friends and activities
• Significant tiredness, low energy or problems sleeping
• Detachment from reality (delusions), paranoia or hallucinations
• Inability to cope with daily problems or stress
• Trouble understanding and relating to situations and to people
• Problems with alcohol or drug use
• Major changes in eating habits
• Sex drive changes
• Excessive anger, hostility or violence
• Suicidal thinking

Sometimes symptoms of a mental health disorder appear as physical problems, such as stomach pain, back pain, headaches, or other unexplained aches and pains.

When to see a doctor

If you have any signs or symptoms of a mental illness, see your primary care provider or a mental health professional. Most mental illnesses don’t improve on their own, and if untreated, a mental illness may get worse over time and cause serious problems.

If you have suicidal thoughts

Suicidal thoughts and behavior are common with some mental illnesses. If you think you may hurt yourself or attempt suicide, get help right away:

• Call 911 or your local emergency number immediately.
• Call your mental health specialist.
• Contact a suicide hotline. In the U.S., call or text 988 to reach the 988 Suicide & Crisis Lifeline, available 24 hours a day, seven days a week. Or use the Lifeline Chat. Services are free and confidential.
• Seek help from your primary care provider.
• Reach out to a close friend or loved one.
• Contact a minister, spiritual leader or someone else in your faith community.

Suicidal thinking doesn’t get better on its own — so get help.

Helping a loved one

If your loved one shows signs of mental illness, have an open and honest discussion with him or her about your concerns. You may not be able to force someone to get professional care, but you can offer encouragement and support. You can also help your loved one find a qualified mental health professional and make an appointment. You may even be able to go along to the appointment.

If your loved one has done self-harm or is considering doing so, take the person to the hospital or call for emergency help.

Causes

Mental illnesses, in general, are thought to be caused by a variety of genetic and environmental factors:

• Inherited traits. Mental illness is more common in people whose blood relatives also have a mental illness. Certain genes may increase your risk of developing a mental illness, and your life situation may trigger it.
• Environmental exposures before birth. Exposure to environmental stressors, inflammatory conditions, toxins, alcohol or drugs while in the womb can sometimes be linked to mental illness.
• Brain chemistry. Neurotransmitters are naturally occurring brain chemicals that carry signals to other parts of your brain and body. When the neural networks involving these chemicals are impaired, the function of nerve receptors and nerve systems change, leading to depression and other emotional disorders.

Risk factors

Certain factors may increase your risk of developing a mental illness, including:

• A history of mental illness in a blood relative, such as a parent or sibling
• Stressful life situations, such as financial problems, a loved one’s death or a divorce
• An ongoing (chronic) medical condition, such as diabetes
• Brain damage as a result of a serious injury (traumatic brain injury), such as a violent blow to the head
• Traumatic experiences, such as military combat or assault
• Use of alcohol or recreational drugs
• A childhood history of abuse or neglect
• Few friends or few healthy relationships
• A previous mental illness

Mental illness is common. About 1 in 5 adults has a mental illness in any given year. Mental illness can begin at any age, from childhood through later adult years, but most cases begin earlier in life.

The effects of mental illness can be temporary or long lasting. You also can have more than one mental health disorder at the same time. For example, you may have depression and a substance use disorder.

Complications

Mental illness is a leading cause of disability. Untreated mental illness can cause severe emotional, behavioral and physical health problems. Complications sometimes linked to mental illness include:

• Unhappiness and decreased enjoyment of life
• Family conflicts
• Relationship difficulties
• Social isolation
• Problems with tobacco, alcohol and other drugs
• Missed work or school, or other problems related to work or school
• Legal and financial problems
• Poverty and homelessness
• Self-harm and harm to others, including suicide or homicide
• Weakened immune system, so your body has a hard time resisting infections
• Heart disease and other medical conditions

Prevention

There’s no sure way to prevent mental illness. However, if you have a mental illness, taking steps to control stress, to increase your resilience and to boost low self-esteem may help keep your symptoms under control. Follow these steps:

• Pay attention to warning signs. Work with your doctor or therapist to learn what might trigger your symptoms. Make a plan so that you know what to do if symptoms return. Contact your doctor or therapist if you notice any changes in symptoms or how you feel. Consider involving family members or friends to watch for warning signs.
• Get routine medical care. Don’t neglect checkups or skip visits to your primary care provider, especially if you aren’t feeling well. You may have a new health problem that needs to be treated, or you may be experiencing side effects of medication.
• Get help when you need it. Mental health conditions can be harder to treat if you wait until symptoms get bad. Long-term maintenance treatment also may help prevent a relapse of symptoms.
• Take good care of yourself. Sufficient sleep, healthy eating and regular physical activity are important. Try to maintain a regular schedule. Talk to your primary care provider if you have trouble sleeping or if you have questions about diet and physical activity.

Genital herpes is a common sexually transmitted infection (STI). The herpes simplex virus (HSV) causes genital herpes. Genital herpes can often be spread by skin-to-skin contact during sexual activity.

Some people infected with the virus may have very mild symptoms or no symptoms. They can still able to spread the virus. Other people have pain, itching and sores around the genitals, anus or mouth.

There is no cure for genital herpes. Symptoms often show up again after the first outbreak. Medicine can ease symptoms. It also lowers the risk of infecting others. Condoms can help prevent the spread of a genital herpes infection.

Symptoms

Most people infected with HSV don’t know they have it. They may have no symptoms or have very mild symptoms.

Symptoms start about 2 to 12 days after exposure to the virus. They may include:

• Pain or itching around the genitals
• Small bumps or blisters around the genitals, anus or mouth
• Painful ulcers that form when blisters rupture and ooze or bleed
• Scabs that form as the ulcers heal
• Painful urination
• Discharge from the urethra, the tube that releases urine from the body
• Discharge from the vagina

During the first outbreak, you may commonly have flu-like symptoms such as:

• Fever
• Headache
• Body aches
• Swollen lymph nodes in the groin

Differences in symptom location

Sores appear where the infection enters the body. You can spread the infection by touching a sore and then rubbing or scratching another area of your body. That includes your fingers or eyes.

Sore can develop on or in the:

• Buttocks
• Thighs
• Rectum
• Anus
• Mouth
• Urethra
• Vulva
• Vagina
• Cervix
• Penis
• Scrotum

Repeat outbreaks

After the first outbreak of genital herpes, symptoms often appear again. These are called recurrent outbreaks or recurrent episodes.

How often recurrent outbreaks happen varies widely. You’ll usually have the most outbreaks the first year after infection. They may appear less often over time. Your symptoms during recurrent outbreaks usually don’t last as long and aren’t as severe as the first.

You may have warning signs a few hours or days before a new outbreak starts. These are called prodromal symptoms. They include:

• Genital pain
• Tingling or shooting pain in the legs, hips or buttocks

When to see a doctor

If you suspect you have genital herpes, or any other STI, see your health care provider.

Causes

Genital herpes is caused by two types of herpes simplex virus. These types include herpes simplex virus type 2 (HSV-2) and herpes simplex virus type 1 (HSV-1). People with HSV infections can pass along the virus even when they have no visible symptoms.

HSV-2

HSV-2 is the most common cause of genital herpes. The virus can be present:

• On blisters and ulcers or the fluid from ulcers
• The moist lining or fluids of the mouth
• The moist lining or fluids of the vagina or rectum

The virus moves from one person to another during sexual activity.

HSV-1

HSV-1 is a version of the virus that causes cold sores or fever blisters. People may be exposed to HSV-1 as children due to close skin-to-skin contact with someone infected.

A person with HSV-1 in tissues of the mouth can pass the virus to the genitals of a sexual partner during oral sex. The newly caught infection is a genital herpes infection.

Recurrent outbreaks of genital herpes caused by HSV-1 are often less frequent than outbreaks caused by HSV-2.

Neither HSV-1 nor HSV-2 survives well at room temperature. So the virus is not likely to spread through surfaces, such as a faucet handle or a towel. But kissing or sharing a drinking glass or silverware might spread the virus.

Risk factors

A higher risk of getting genital herpes is linked to:

• Contact with genitals through oral, vaginal or anal sex. Having sexual contact without using a barrier increases your risk of genital herpes. Barriers include condoms and condom-like protectors called dental dams used during oral sex. Women are at higher risk of getting genital herpes. The virus can spread more easily from men to women than from women to men.
• Having sex with multiple partners. The number of people you have sex with is a strong risk factor. Contact with genitals through sex or sexual activity puts you at higher risk. Most people with genital herpes do not know they have it.
• Having a partner who has the disease but is not taking medicine to treat it. There is no cure for genital herpes, but medicine can help limit outbreaks.
• Certain groups within the population. Women, people with a history of sexually transmitted diseases, older people, Black people in in the United States and men who have sex with men diagnosed with genital herpes at a higher than average rate. People in groups at higher risk may choose to talk to a health care provider about their personal risk.

Complications

Complications associated with genital herpes may include:

• Other sexually transmitted infections. Having genital sores raises your risk of giving or getting other STIs, including HIV/AIDS.
• Newborn infection. A baby can be infected with HSV during delivery. Less often, the virus is passed during pregnancy or by close contact after delivery. Newborns with HSV often have infections of internal organs or the nervous system. Even with treatment, these newborns have a high risk of developmental or physical problems and a risk of death.
• Internal inflammatory disease. HSV infection can cause swelling and inflammation within the organs associated with sexual activity and urination. These include the ureter, rectum, vagina, cervix and uterus.
• Finger infection. An HSV infection can spread to a finger through a break in the skin causing discoloration, swelling and sores. The infections are called herpetic whitlow.
• Eye infection. HSV infection of the eye can cause pain, sores, blurred vision and blindness.
• Swelling of the brain. Rarely, HSV infection leads to inflammation and swelling of the brain, also called encephalitis.
• Infection of internal organs. Rarely, HSV in the bloodstream can cause infections of internal organs.

Prevention

Prevention of genital herpes is the same as preventing other sexually transmitted infections.

• Have one long-term sexual partner who has been tested for STIs and isn’t infected.
• Use a condom or dental dam during sexual activity. These reduce the risk of disease, but they don’t prevent all skin-to-skin contact during sex.
• Don’t have sex when a partner with genital herpes has symptoms.

Pregnancy precautions

If you are pregnant and know you have genital herpes, tell your health care provider. If you think you might have genital herpes, ask your provider if you can be tested for it.

Your provider may recommend that you take herpes antiviral medicines late in pregnancy. This is to try to prevent an outbreak around the time of delivery. If you have an outbreak when you go into labor, your provider may suggest a cesarean section. That is a surgery to remove the baby from your uterus. It lowers the risk of passing the virus to your baby.

What is a migraine? 

A migraine is a headache that can cause severe throbbing pain or a pulsing sensation, usually on one side of the head. It’s often accompanied by nausea, vomiting, and extreme sensitivity to light and sound. Migraine attacks can last for hours to days, and the pain can be so bad that it interferes with your daily activities.

For some people, a warning symptom known as an aura occurs before or with the headache. An aura can include visual disturbances, such as flashes of light or blind spots, or other disturbances, such as tingling on one side of the face or in an arm or leg and difficulty speaking.

Medications can help prevent some migraines and make them less painful. The right medicines, combined with self-help remedies and lifestyle changes, might help.

Symptoms

Migraines, which affect children and teenagers as well as adults, can progress through four stages: prodrome, aura, attack and post-drome. Not everyone who has migraines goes through all stages.

Prodrome

One or two days before a migraine, you might notice subtle changes that warn of an upcoming migraine, including:

• Constipation.
• Mood changes, from depression to euphoria.
• Food cravings.
• Neck stiffness.
• Increased urination.
• Fluid retention.
• Frequent yawning.

Aura

For some people, an aura might occur before or during migraines. Auras are reversible symptoms of the nervous system. They’re usually visual but can also include other disturbances. Each symptom usually begins gradually, builds up over several minutes and can last up to 60 minutes.

Examples of migraine auras include:

• Visual phenomena, such as seeing various shapes, bright spots or flashes of light.
• Vision loss.
• Pins and needles sensations in an arm or leg.
• Weakness or numbness in the face or one side of the body.
• Difficulty speaking.

Attack

A migraine usually lasts from 4 to 72 hours if untreated. How often migraines occur varies from person to person. Migraines might occur rarely or strike several times a month.

During a migraine, you might have:

• Pain usually on one side of your head, but often on both sides.
• Pain that throbs or pulses.
• Sensitivity to light, sound, and sometimes smell and touch.
• Nausea and vomiting.

Post-drome

After a migraine attack, you might feel drained, confused and washed out for up to a day. Some people report feeling elated. Sudden head movement might bring on the pain again briefly.

When to see a doctor

Migraines are often undiagnosed and untreated. If you regularly have signs and symptoms of migraine, keep a record of your attacks and how you treated them. Then make an appointment with your health care provider to discuss your headaches.

Even if you have a history of headaches, see your health care provider if the pattern changes or your headaches suddenly feel different.

See your health care provider immediately or go to the emergency room if you have any of the following signs and symptoms, which could indicate a more serious medical problem:

• An abrupt, severe headache like a thunderclap.
• Headache with fever, stiff neck, confusion, seizures, double vision, numbness or weakness in any part of the body, which could be a sign of a stroke.
• Headache after a head injury.
• A chronic headache that is worse after coughing, exertion, straining or a sudden movement.
• New headache pain after age 50.

Causes

Though migraine causes aren’t fully understood, genetics and environmental factors appear to play a role.

Changes in the brainstem and its interactions with the trigeminal nerve, a major pain pathway, might be involved. So might imbalances in brain chemicals — including serotonin, which helps regulate pain in your nervous system.

Researchers are studying the role of serotonin in migraines. Other neurotransmitters play a role in the pain of migraine, including calcitonin gene-related peptide (CGRP).

Migraine triggers

There are a number of migraine triggers, including:

• Hormonal changes in women. Fluctuations in estrogen, such as before or during menstrual periods, pregnancy and menopause, seem to trigger headaches in many women.
  Hormonal medications, such as oral contraceptives, also can worsen migraines. Some women, however, find that their migraines occur less often when taking these medications.
• Drinks. These include alcohol, especially wine, and too much caffeine, such as coffee.
• Stress. Stress at work or home can cause migraines.
• Sensory stimuli. Bright or flashing lights can induce migraines, as can loud sounds. Strong smells — such as perfume, paint thinner, secondhand smoke and others — trigger migraines in some people.
• Sleep changes. Missing sleep or getting too much sleep can trigger migraines in some people.
• Physical strain. Intense physical exertion, including sexual activity, might provoke migraines.
• Weather changes. A change of weather or barometric pressure can prompt a migraine.
• Medications. Oral contraceptives and vasodilators, such as nitroglycerin, can aggravate migraines.
• Foods. Aged cheeses and salty and processed foods might trigger migraines. So might skipping meals.
• Food additives. These include the sweetener aspartame and the preservative monosodium glutamate (MSG), found in many foods.

Risk factors

Several factors make you more prone to having migraines, including:

• Family history. If you have a family member with migraines, then you have a good chance of developing them too.
• Age. Migraines can begin at any age, though the first often occurs during adolescence. Migraines tend to peak during your 30s, and gradually become less severe and less frequent in the following decades.
• Sex. Women are three times more likely than men to have migraines.
• Hormonal changes. For women who have migraines, headaches might begin just before or shortly after onset of menstruation. They might also change during pregnancy or menopause. Migraines generally improve after menopause.

Complications

Taking painkillers too often can trigger serious medication-overuse headaches. The risk seems to be highest with aspirin, acetaminophen (Tylenol, others) and caffeine combinations. Overuse headaches may also occur if you take aspirin or ibuprofen (Advil, Motrin IB, others) for more than 14 days a month or triptans, sumatriptan (Imitrex, Tosymra) or rizatriptan (Maxalt) for more than nine days a month.

Medication-overuse headaches occur when medications stop relieving pain and begin to cause headaches. You then use more pain medication, which continues the cycle.

Acute kidney failure occurs when your kidneys suddenly become unable to filter waste products from your blood. When your kidneys lose their filtering ability, dangerous levels of wastes may accumulate, and your blood’s chemical makeup may get out of balance.

Acute kidney failure — also called acute renal failure or acute kidney injury — develops rapidly, usually in less than a few days. Acute kidney failure is most common in people who are already hospitalized, particularly in critically ill people who need intensive care.

Acute kidney failure can be fatal and requires intensive treatment. However, acute kidney failure may be reversible. If you’re otherwise in good health, you may recover normal or nearly normal kidney function.

Symptoms

Signs and symptoms of acute kidney failure may include:

• Decreased urine output, although occasionally urine output remains normal
• Fluid retention, causing swelling in your legs, ankles or feet
• Shortness of breath
• Fatigue
• Confusion
• Nausea
• Weakness
• Irregular heartbeat
• Chest pain or pressure
• Seizures or coma in severe cases

Sometimes acute kidney failure causes no signs or symptoms and is detected through lab tests done for another reason.

When to see a doctor

See your doctor immediately or seek emergency care if you have signs or symptoms of acute kidney failure.

Causes

Acute kidney failure can occur when:

• You have a condition that slows blood flow to your kidneys
• You experience direct damage to your kidneys
• Your kidneys’ urine drainage tubes (ureters) become blocked and wastes can’t leave your body through your urine

Impaired blood flow to the kidneys

Diseases and conditions that may slow blood flow to the kidneys and lead to kidney injury include:

• Blood or fluid loss
• Blood pressure medications
• Heart attack
• Heart disease
• Infection
• Liver failure
• Use of aspirin, ibuprofen (Advil, Motrin IB, others), naproxen sodium (Aleve, others) or related drugs
• Severe allergic reaction (anaphylaxis)
• Severe burns
• Severe dehydration

Damage to the kidneys

These diseases, conditions and agents may damage the kidneys and lead to acute kidney failure:

• Blood clots in the veins and arteries in and around the kidneys
• Cholesterol deposits that block blood flow in the kidneys
• Glomerulonephritis (gloe-mer-u-loe-nuh-FRY-tis), inflammation of the tiny filters in the kidneys (glomeruli)
• Hemolytic uremic syndrome, a condition that results from premature destruction of red blood cells
• Infection, such as with the virus that causes coronavirus disease 2019 (COVID-19)
• Lupus, an immune system disorder causing glomerulonephritis
• Medications, such as certain chemotherapy drugs, antibiotics and dyes used during imaging tests
• Scleroderma, a group of rare diseases affecting the skin and connective tissues
• Thrombotic thrombocytopenic purpura, a rare blood disorder
• Toxins, such as alcohol, heavy metals and cocaine
• Muscle tissue breakdown (rhabdomyolysis) that leads to kidney damage caused by toxins from muscle tissue destruction
• Breakdown of tumor cells (tumor lysis syndrome), which leads to the release of toxins that can cause kidney injury

Urine blockage in the kidneys

Diseases and conditions that block the passage of urine out of the body (urinary obstructions) and can lead to acute kidney injury include:

• Bladder cancer
• Blood clots in the urinary tract
• Cervical cancer
• Colon cancer
• Enlarged prostate
• Kidney stones
• Nerve damage involving the nerves that control the bladder
• Prostate cancer

Risk factors

Acute kidney failure almost always occurs in connection with another medical condition or event. Conditions that can increase your risk of acute kidney failure include:

• Being hospitalized, especially for a serious condition that requires intensive care
• Advanced age
• Blockages in the blood vessels in your arms or legs (peripheral artery disease)
• Diabetes
• High blood pressure
• Heart failure
• Kidney diseases
• Liver diseases
• Certain cancers and their treatments

Complications

Potential complications of acute kidney failure include:

• Fluid buildup. Acute kidney failure may lead to a buildup of fluid in your lungs, which can cause shortness of breath.
• Chest pain. If the lining that covers your heart (pericardium) becomes inflamed, you may experience chest pain.
• Muscle weakness. When your body’s fluids and electrolytes — your body’s blood chemistry — are out of balance, muscle weakness can result.
• Permanent kidney damage. Occasionally, acute kidney failure causes permanent loss of kidney function, or end-stage renal disease. People with end-stage renal disease require either permanent dialysis — a mechanical filtration process used to remove toxins and wastes from the body — or a kidney transplant to survive.
• Death. Acute kidney failure can lead to loss of kidney function and, ultimately, death.

Prevention

Acute kidney failure is often difficult to predict or prevent. But you may reduce your risk by taking care of your kidneys. Try to:

• Pay attention to labels when taking over-the-counter (OTC) pain medications. Follow the instructions for OTC pain medications, such as aspirin, acetaminophen (Tylenol, others), ibuprofen (Advil, Motrin IB, others) and naproxen sodium (Aleve, others). Taking too much of these medications may increase your risk of kidney injury. This is especially true if you have pre-existing kidney disease, diabetes or high blood pressure.
• Work with your doctor to manage kidney and other chronic conditions. If you have kidney disease or another condition that increases your risk of acute kidney failure, such as diabetes or high blood pressure, stay on track with treatment goals and follow your doctor’s recommendations to manage your condition.
• Make a healthy lifestyle a priority. Be active; eat a sensible, balanced diet; and drink alcohol only in moderation — if at all.

Insomnia

Insomnia is a common sleep disorder that can make it hard to fall asleep or stay asleep. It also can cause you to wake up too early and not be able to get back to sleep. You may still feel tired when you wake up. Insomnia can drain your energy level and affect your mood. It also can affect your health, work performance and quality of life.

How much sleep is enough varies from person to person. But most adults need 7 to 9 hours a night.

At some point, many adults have short-term insomnia. This can last for days or weeks. Short-term insomnia is usually due to stress or a distressing event. But some people have long-term insomnia, also called chronic insomnia. This lasts for three months or more. Insomnia may be the main problem, or it may be related to other medical conditions or medicines.

You do not have to put up with sleepless nights. Simple changes in your daily habits often can help.

Symptoms

Insomnia symptoms may include:

• Having a hard time falling asleep at night.
• Waking up during the night.
• Waking up too early.
• Feeling tired or sleepy during the day.
• Feeling cranky, depressed or anxious.
• Having a hard time paying attention, focusing on tasks or remembering.
• Making more errors or having more accidents.
• Having ongoing worries about sleep.

When to see a doctor

If insomnia makes it hard for you to do daily activities, see your doctor or another primary care professional. Your doctor will search for the cause of your sleep problem and help treat it. If it’s thought that you could have a sleep disorder, your doctor might suggest going to a sleep center for special testing.

Causes

Insomnia may be the main problem or it may be related to other conditions.

Long-term insomnia is usually due to stress, life events or habits that disrupt sleep. While treating the cause of your sleep problem may stop your insomnia, sometimes it can last for years.

Common causes of long-term insomnia include:

• Stress. Concerns about work, school, health, money or family can keep your mind active at night, making it hard to sleep. Stressful life events, such as the death or illness of a loved one, divorce, or a job loss, also may lead to insomnia.
• Travel or work schedule. Your body’s “internal clock,” known as circadian rhythms, guides things such as your sleep-wake cycle, metabolism and body temperature. Disrupting these rhythms can lead to insomnia. Causes include feeling jet lag from traveling across multiple time zones, working a late or early shift, or changing shifts often.
• Poor sleep habits. Poor sleep habits include going to bed and waking up at different times each day, taking naps, being too active before bedtime and having a sleep area that is not comfortable. Other poor sleep habits include working, eating or watching TV while in bed. Using computers or smartphones, playing video games, or watching TV just before bed can disrupt your sleep cycle.
• Eating too much late in the evening. Having a light snack before bedtime is OK. But eating too much may cause you to feel uncomfortable while lying down. Many people also have heartburn. This is when stomach acid backs up into the tube that carries food from your mouth to your stomach. This tube is called the esophagus. Heartburn may keep you awake.
• Mental health disorders. Anxiety disorders, such as post-traumatic stress disorder, may disrupt your sleep. Waking up too early can be a sign of depression. Insomnia often occurs with other mental health conditions.
• Medicines. Many prescription drugs can interfere with sleep, such as certain antidepressants and medicines for asthma or blood pressure. Many medicines available without a prescription, such as some pain medicines, allergy and cold medicines, and weight-loss products, contain caffeine and other stimulants that can disrupt sleep.
• Medical conditions. Examples of conditions linked with insomnia include ongoing pain, cancer, diabetes, heart disease, asthma, gastroesophageal reflux disease (GERD), overactive thyroid, Parkinson’s disease and Alzheimer’s disease.
• Sleep-related disorders. Sleep apnea causes you to stop breathing at times during the night, disrupting your sleep. Restless legs syndrome causes a strong uncomfortable urge to move your legs when trying to fall asleep. This may keep you from falling asleep or getting back to sleep.
• Caffeine, nicotine and alcohol. Coffee, tea, cola and other drinks that have caffeine are stimulants. Drinking them in the late afternoon or evening can keep you from falling asleep at night. Nicotine in tobacco products is another stimulant that can disrupt sleep. Alcohol may help you fall asleep, but it prevents deeper stages of sleep and often results in waking up in the middle of the night.

Insomnia and aging

Insomnia becomes more common with age. As you get older, you may:

• Change your sleep patterns. Sleep often becomes less restful as you age, so noise or other changes in your surroundings are more likely to wake you. With age, your internal clock often moves forward in time, so you get tired earlier in the evening and wake up earlier in the morning. But older people typically still need the same amount of sleep as younger people.
• Change your level of activity. You may be less physically or socially active. A lack of activity can disrupt a good night’s sleep. Also, the less active you are, the more likely you may be to take a daily nap. Napping can disrupt sleep at night.
• Have changes in your health. Ongoing pain from conditions such as arthritis or back problems, as well as depression or anxiety, can disrupt sleep. Issues that make it more likely that you’ll need to urinate during the night, such as prostate or bladder problems, can disrupt sleep. Sleep apnea and restless legs syndrome become more common with age.
• Take more medicines. Older people typically use more prescription drugs than younger people do. This raises the chance of insomnia related to medicines.

Insomnia in children and teens

Sleep problems may be a concern for children and teenagers too. But some children and teens simply have trouble getting to sleep or resist a regular bedtime because their internal clocks are more delayed. They want to go to bed later and sleep later in the morning.

Risk factors

Nearly everyone has an occasional sleepless night. But you’re more likely to have insomnia if:

• You’re a woman. Changes in hormones during the menstrual cycle and in menopause may play a role. During menopause, night sweats and hot flashes often disrupt sleep. Insomnia also is common during pregnancy.
• You’re over 60. Because of changes in sleep patterns and health, it’s more likely you’ll have insomnia as you get older.
• You have a mental health or physical health condition. Many issues that affect your mental or physical health can disrupt sleep.
• You’re under a lot of stress. Being stressed can cause short-term insomnia. Major or long-lasting stress can lead to long-term insomnia.
• You do not have a regular schedule. For example, changing shifts at work or traveling can disrupt your sleep-wake cycle.

Complications

Sleep is as important to your health as a healthy diet and regular physical activity. Whatever is keeping you from sleeping, insomnia can affect you mentally and physically. People with insomnia report a lower quality of life compared with people who sleep well.

Complications of insomnia may include:

• Lower performance on the job or at school.
• Slowed reaction time while driving and a higher risk of accidents.
• Mental health conditions, such as depression, anxiety or substance misuse.
• Higher risk or worsening of long-term diseases or conditions, such as high blood pressure and heart disease.

Prevention

Good sleep habits like these can help prevent insomnia:

• Keep the time you go to bed and the time you wake up the same every day, including weekends.
• Stay active. Regular activity can lead to a good night’s sleep.
• Limit naps or do not nap at all.
• Limit or do not use caffeine, alcohol and nicotine.
• Do not eat large meals or drink a lot of fluids before bed.
• Make your bedroom comfortable for sleep and only use it for sex or sleep.
• Create a relaxing bedtime ritual, such as taking a warm bath, reading or listening to soft music.