Overview

Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems. You may have trouble doing normal day-to-day activities, and sometimes you may feel as if life isn't worth living.

More than just a bout of the blues, depression isn't a weakness and you can't simply "snap out" of it. Depression may require long-term treatment. But don't get discouraged. Most people with depression feel better with medication, psychotherapy or both.

Depression care at Mayo Clinic

Source: http://www.mayoclinic.com

Symptoms

Although depression may occur only once during your life, people typically have multiple episodes. During these episodes, symptoms occur most of the day, nearly every day and may include:

• Feelings of sadness, tearfulness, emptiness or hopelessness
• Angry outbursts, irritability or frustration, even over small matters
• Loss of interest or pleasure in most or all normal activities, such as sex, hobbies or sports
• Sleep disturbances, including insomnia or sleeping too much
• Tiredness and lack of energy, so even small tasks take extra effort
• Reduced appetite and weight loss or increased cravings for food and weight gain
• Anxiety, agitation or restlessness
• Slowed thinking, speaking or body movements
• Feelings of worthlessness or guilt, fixating on past failures or self-blame
• Trouble thinking, concentrating, making decisions and remembering things
• Frequent or recurrent thoughts of death, suicidal thoughts, suicide attempts or suicide
• Unexplained physical problems, such as back pain or headaches

For many people with depression, symptoms usually are severe enough to cause noticeable problems in day-to-day activities, such as work, school, social activities or relationships with others. Some people may feel generally miserable or unhappy without really knowing why.

Depression symptoms in children and teens

Common signs and symptoms of depression in children and teenagers are similar to those of adults, but there can be some differences.

• In younger children, symptoms of depression may include sadness, irritability, clinginess, worry, aches and pains, refusing to go to school, or being underweight.
• In teens, symptoms may include sadness, irritability, feeling negative and worthless, anger, poor performance or poor attendance at school, feeling misunderstood and extremely sensitive, using recreational drugs or alcohol, eating or sleeping too much, self-harm, loss of interest in normal activities, and avoidance of social interaction.

Depression symptoms in older adults

Depression is not a normal part of growing older, and it should never be taken lightly. Unfortunately, depression often goes undiagnosed and untreated in older adults, and they may feel reluctant to seek help. Symptoms of depression may be different or less obvious in older adults, such as:

• Memory difficulties or personality changes
• Physical aches or pain
• Fatigue, loss of appetite, sleep problems or loss of interest in sex — not caused by a medical condition or medication
• Often wanting to stay at home, rather than going out to socialize or doing new things
• Suicidal thinking or feelings, especially in older men

When to see a doctor

If you feel depressed, make an appointment to see your doctor or mental health professional as soon as you can. If you're reluctant to seek treatment, talk to a friend or loved one, any health care professional, a faith leader, or someone else you trust.

When to get emergency help

If you think you may hurt yourself or attempt suicide, call 911 or your local emergency number immediately.

Also consider these options if you're having suicidal thoughts:

• Call your doctor or mental health professional.
• Call a suicide hotline number — in the U.S., call the National Suicide Prevention Lifeline at 1-800-273-TALK (1-800-273-8255). Use that same number and press "1" to reach the Veterans Crisis Line.
• Reach out to a close friend or loved one.
• Contact a minister, spiritual leader or someone else in your faith community.

If you have a loved one who is in danger of suicide or has made a suicide attempt, make sure someone stays with that person. Call 911 or your local emergency number immediately. Or, if you think you can do so safely, take the person to the nearest hospital emergency room.

Source: http://www.mayoclinic.com

Causes

It's not known exactly what causes depression. As with many mental disorders, a variety of factors may be involved, such as:

• Biological differences. People with depression appear to have physical changes in their brains. The significance of these changes is still uncertain, but may eventually help pinpoint causes.
• Brain chemistry. Neurotransmitters are naturally occurring brain chemicals that likely play a role in depression. Recent research indicates that changes in the function and effect of these neurotransmitters and how they interact with neurocircuits involved in maintaining mood stability may play a significant role in depression and its treatment.
• Hormones. Changes in the body's balance of hormones may be involved in causing or triggering depression. Hormone changes can result with pregnancy and during the weeks or months after delivery (postpartum) and from thyroid problems, menopause or a number of other conditions.
• Inherited traits. Depression is more common in people whose blood relatives also have this condition. Researchers are trying to find genes that may be involved in causing depression.

Source: http://www.mayoclinic.com

Diagnosis

Your doctor may determine a diagnosis of depression based on:

• Physical exam. Your doctor may do a physical exam and ask questions about your health. In some cases, depression may be linked to an underlying physical health problem.
• Lab tests. For example, your doctor may do a blood test called a complete blood count or test your thyroid to make sure it's functioning properly.
• Psychiatric evaluation. Your mental health professional asks about your symptoms, thoughts, feelings and behavior patterns. You may be asked to fill out a questionnaire to help answer these questions.
• DSM-5. Your mental health professional may use the criteria for depression listed in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), published by the American Psychiatric Association.

Types of depression

Symptoms caused by major depression can vary from person to person. To clarify the type of depression you have, your doctor may add one or more specifiers. A specifier means that you have depression with specific features, such as:

• Anxious distress — depression with unusual restlessness or worry about possible events or loss of control
• Mixed features — simultaneous depression and mania, which includes elevated self-esteem, talking too much and increased energy
• Melancholic features — severe depression with lack of response to something that used to bring pleasure and associated with early morning awakening, worsened mood in the morning, major changes in appetite, and feelings of guilt, agitation or sluggishness
• Atypical features — depression that includes the ability to temporarily be cheered by happy events, increased appetite, excessive need for sleep, sensitivity to rejection, and a heavy feeling in the arms or legs
• Psychotic features — depression accompanied by delusions or hallucinations, which may involve personal inadequacy or other negative themes
• Catatonia — depression that includes motor activity that involves either uncontrollable and purposeless movement or fixed and inflexible posture
• Peripartum onset — depression that occurs during pregnancy or in the weeks or months after delivery (postpartum)
• Seasonal pattern — depression related to changes in seasons and reduced exposure to sunlight

Other disorders that cause depression symptoms

Several other disorders, such as those below, include depression as a symptom. It's important to get an accurate diagnosis, so you can get appropriate treatment.

• Bipolar I and II disorders. These mood disorders include mood swings that range from highs (mania) to lows (depression). It's sometimes difficult to distinguish between bipolar disorder and depression.
• Cyclothymic disorder. Cyclothymic (sy-kloe-THIE-mik) disorder involves highs and lows that are milder than those of bipolar disorder.
• Disruptive mood dysregulation disorder. This mood disorder in children includes chronic and severe irritability and anger with frequent extreme temper outbursts. This disorder typically develops into depressive disorder or anxiety disorder during the teen years or adulthood.
• Persistent depressive disorder. Sometimes called dysthymia (dis-THIE-me-uh), this is a less severe but more chronic form of depression. While it's usually not disabling, persistent depressive disorder can prevent you from functioning normally in your daily routine and from living life to its fullest.
• Premenstrual dysphoric disorder. This involves depression symptoms associated with hormone changes that begin a week before and improve within a few days after the onset of your period, and are minimal or gone after completion of your period.
• Other depression disorders. This includes depression that's caused by the use of recreational drugs, some prescribed medications or another medical condition.

Source: http://www.mayoclinic.com

Complications

Depression is a serious disorder that can take a terrible toll on you and your family. Depression often gets worse if it isn't treated, resulting in emotional, behavioral and health problems that affect every area of your life.

Examples of complications associated with depression include:

• Excess weight or obesity, which can lead to heart disease and diabetes
• Pain or physical illness
• Alcohol or drug misuse
• Anxiety, panic disorder or social phobia
• Family conflicts, relationship difficulties, and work or school problems
• Social isolation
• Suicidal feelings, suicide attempts or suicide
• Self-mutilation, such as cutting
• Premature death from medical conditions

Source: http://www.mayoclinic.com

Prevention

There's no sure way to prevent depression. However, these strategies may help.

• Take steps to control stress, to increase your resilience and boost your self-esteem.
• Reach out to family and friends, especially in times of crisis, to help you weather rough spells.
• Get treatment at the earliest sign of a problem to help prevent depression from worsening.
• Consider getting long-term maintenance treatment to help prevent a relapse of symptoms.

Alternative medicine

Alternative medicine is the use of a nonconventional approach instead of conventional medicine. Complementary medicine is a nonconventional approach used along with conventional medicine — sometimes called integrative medicine.

Make sure you understand the risks as well as possible benefits if you pursue alternative or complementary therapy. Don't replace conventional medical treatment or psychotherapy with alternative medicine. When it comes to depression, alternative treatments aren't a substitute for medical care.

Supplements

Examples of supplements that are sometimes used for depression include:

• St. John's wort. Although this herbal supplement isn't approved by the Food and Drug Administration (FDA) to treat depression in the U.S., it may be helpful for mild or moderate depression. But if you choose to use it, be careful — St. John's wort can interfere with a number of medications, such as heart drugs, blood-thinning drugs, birth control pills, chemotherapy, HIV/AIDS medications and drugs to prevent organ rejection after a transplant. Also, avoid taking St. John's wort while taking antidepressants because the combination can cause serious side effects.
• SAMe. Pronounced "sam-E," this dietary supplement is a synthetic form of a chemical that occurs naturally in the body. The name is short for S-adenosylmethionine (es-uh-den-o-sul-muh-THIE-o-neen). SAMe isn't approved by the FDA to treat depression in the U.S. It may be helpful, but more research is needed. SAMe may trigger mania in people with bipolar disorder.
• Omega-3 fatty acids. These healthy fats are found in cold-water fish, flaxseed, flax oil, walnuts and some other foods. Omega-3 supplements are being studied as a possible treatment for depression. While considered generally safe, in high doses, omega-3 supplements may interact with other medications. More research is needed to determine if eating foods with omega-3 fatty acids can help relieve depression.

Nutritional and dietary products aren't monitored by the FDA the same way medications are. You can't always be certain of what you're getting and whether it's safe. Also, because some herbal and dietary supplements can interfere with prescription medications or cause dangerous interactions, talk to your doctor or pharmacist before taking any supplements.

Mind-body connections

Integrative medicine practitioners believe the mind and body must be in harmony for you to stay healthy. Examples of mind-body techniques that may be helpful for depression include:

• Acupuncture
• Relaxation techniques such as yoga or tai chi
• Meditation
• Guided imagery
• Massage therapy
• Music or art therapy
• Spirituality
• Aerobic exercise

Relying solely on these therapies is generally not enough to treat depression. They may be helpful when used in addition to medication and psychotherapy.

Source: http://www.mayoclinic.com

Lifestyle and home remedies

Depression generally isn't a disorder that you can treat on your own. But in addition to professional treatment, these self-care steps can help:

• Stick to your treatment plan. Don't skip psychotherapy sessions or appointments. Even if you're feeling well, don't skip your medications. If you stop, depression symptoms may come back, and you could also experience withdrawal-like symptoms. Recognize that it will take time to feel better.
• Learn about depression. Education about your condition can empower you and motivate you to stick to your treatment plan. Encourage your family to learn about depression to help them understand and support you.
• Pay attention to warning signs. Work with your doctor or therapist to learn what might trigger your depression symptoms. Make a plan so that you know what to do if your symptoms get worse. Contact your doctor or therapist if you notice any changes in symptoms or how you feel. Ask relatives or friends to help watch for warning signs.
• Avoid alcohol and recreational drugs. It may seem like alcohol or drugs lessen depression symptoms, but in the long run they generally worsen symptoms and make depression harder to treat. Talk with your doctor or therapist if you need help with alcohol or substance use.
• Take care of yourself. Eat healthy, be physically active and get plenty of sleep. Consider walking, jogging, swimming, gardening or another activity that you enjoy. Sleeping well is important for both your physical and mental well-being. If you're having trouble sleeping, talk to your doctor about what you can do.

Source: http://www.mayoclinic.com

Coping and support

Talk with your doctor or therapist about improving your coping skills, and try these tips:

• Simplify your life. Cut back on obligations when possible, and set reasonable goals for yourself. Give yourself permission to do less when you feel down.
• Write in a journal. Journaling, as part of your treatment, may improve mood by allowing you to express pain, anger, fear or other emotions.
• Read reputable self-help books and websites. Your doctor or therapist may be able to recommend books or websites to read.
• Locate helpful groups. Many organizations, such as the National Alliance on Mental Illness (NAMI) and the Depression and Bipolar Support Alliance, offer education, support groups, counseling and other resources to help with depression. Employee assistance programs and religious groups also may offer help for mental health concerns.
• Don't become isolated. Try to participate in social activities, and get together with family or friends regularly. Support groups for people with depression can help you connect to others facing similar challenges and share experiences.
• Learn ways to relax and manage your stress. Examples include meditation, progressive muscle relaxation, yoga and tai chi.
• Structure your time. Plan your day. You may find it helps to make a list of daily tasks, use sticky notes as reminders or use a planner to stay organized.
• Don't make important decisions when you're down. Avoid decision-making when you're feeling depressed, since you may not be thinking clearly.

Source: http://www.mayoclinic.com

Risk factors

Depression often begins in the teens, 20s or 30s, but it can happen at any age. More women than men are diagnosed with depression, but this may be due in part because women are more likely to seek treatment.

Factors that seem to increase the risk of developing or triggering depression include:

• Certain personality traits, such as low self-esteem and being too dependent, self-critical or pessimistic
• Traumatic or stressful events, such as physical or sexual abuse, the death or loss of a loved one, a difficult relationship, or financial problems
• Blood relatives with a history of depression, bipolar disorder, alcoholism or suicide
• Being lesbian, gay, bisexual or transgender, or having variations in the development of genital organs that aren't clearly male or female (intersex) in an unsupportive situation
• History of other mental health disorders, such as anxiety disorder, eating disorders or post-traumatic stress disorder
• Abuse of alcohol or recreational drugs
• Serious or chronic illness, including cancer, stroke, chronic pain or heart disease
• Certain medications, such as some high blood pressure medications or sleeping pills (talk to your doctor before stopping any medication)

Source: http://www.mayoclinic.com