- What Is
- 6 Types
What is depression?
The American Psychiatric Association defines major depressive disorder (depression) as a common, but serious, medical illness that negatively affects how one feels, thinks and acts.
Depression causes sadness and/or a loss of interest in activities once enjoyed. It can lead to a variety of emotional and physical problems and decrease a person’s ability to function at work and home.
What is a nervous breakdown?
A nervous or mental breakdown is a common term used to describe a period of intense mental distress during which one is unable to function in everyday life. This term is used to refer to a wide variety of mental illnesses, including depression, anxiety and acute stress disorder.
What are the causes of depression?
Genetic causes of depression
First-degree relatives of depressed individuals are about three times as likely to develop depression
External stressors causing depression
Stressors can be personal, familial, social and environmental, such as:
- Chronic pain
- Medical illness
- Psychosocial stress
- Lack of sleep
- Impaired social supports
- Caregiver burden
- Negative life events
- Loss of a loved one
- Alcohol and drug abuse
- Certain medications
- Domestic abuse
- Poor parent-child relationship
- Traumatic life events
- Major life changes – divorce, loss of employment, etc.
Risk-factor interactions that cause depression
The relationship between genetic vulnerability, environmental stressors and brain structural abnormalities are risk factor interactions in the development of depression.
Neuroendocrine abnormalities and neurodegenerative diseases
Abnormalities of the neurotransmitter systems may cause depression.
Neurodegenerative diseases (especially Alzheimer and Parkinson), stroke, multiple sclerosis, seizure disorders, cancer and chronic pain have been associated with higher rates of depression
Medical problems that affect blood flow to the brain may also trigger depression:
- Patients experience a higher incidence of depression following a stroke
- Higher prevalence of ischemic (loss of oxygenation) brain changes exist in older adults with depression
- A strong association exists between depression and heart disease as well as depression and diabetes
- Higher rates of depression exist among patients with vascular dementia
What are the signs and symptoms of major depressive disorder?
At least five of the following symptoms must have been present during the same two-week period (and at least one of the symptoms must be diminished interest/pleasure or depressed mood):
- Depressed mood: For children and adolescents, this can also be irritability.
- Diminished interest or loss of pleasure in almost all activities (anhedonia)
- Significant weight change or appetite disturbance: In children, this can be a failure to gain weight and weight gain in adults
- Sleep disturbance (insomnia or hypersomnia)
- Feelings of worthlessness
- Diminished ability to think or concentrate and indecisiveness
- Recurrent thoughts of death, recurrent suicidal ideation or a suicide attempt
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What is depression with anxious distress?
Anxious distress may be added to a depression diagnosis if at least two of the following symptoms are present:
- Feeling tense
- Unusually restless
- Difficulty concentrating
- Fear that something awful may happen
- Feeling of potential loss of control
Severity is further specified as:
- Mild: two symptoms
- Moderate: three symptoms
- Moderate-severe: four or five symptoms
- Severe: four or five symptoms with shaking or other movement symptoms (motor agitation)
What is depression with melancholic features?
At least three of the following are required for this specific diagnosis:
What is depression with catatonia (abnormal movement and behavior)?
- Stupor (near state of unconsciousness)
- Catalepsy (trance/seizure with unconsciousness, rigidity, loss of sensation)
- “Waxy flexibility” of skeletal muscles, meaning limbs stay in a position the doctor puts them in with only mild initial resistance, like bending soft wax
- Stereotypy (purposeless persistent repetition of an act)
- Agitation without provocation
- Echolalia (meaningless repetition of another person’s words)
- Echopraxia (meaningless repetition of movements of others)
What is postpartum depression (postpartum blues)?
Depression in the postpartum period is common and potentially serious. Up to 85% of women can develop mood disturbances during the period after childbirth. Postpartum depression is characterized by fluctuating mood, tearfulness, irritability and anxiety.
What is seasonal affective disorder (SAD)?
Depression symptoms worsen during the winter and improve during the summer.
Major Depressive Disorder with Psychotic Features
This type of depression with psychotic features like:
What is metabolic depression?
Individuals with depression who have metabolic syndrome may be more likely to have persistent or recurrent depression.
What are the risks and complications of depression?
What are the risk factors for suicide?
- Major depression
- Older age
- Male sex
- Previous history of suicide attempts
- Burden of medical disease and presence of a current serious medical condition
- Recent stressful life events
- Lack of social support
- Family discord, being widowed or divorced
- Presence of a gun in the home
- Unexplained weight loss
- Severe anxiety
- Real or perceived lack of meaningful life pursuits
- Presence of a specific suicide plan and its rehearsal
What is the prognosis for major depressive disorder?
Major depressive disorder causes significant distress and makes it difficult for people to form relationships, enjoy leisure or be functional at work. With appropriate medical treatment, therapy and emotional support, 70-80% of patients may be cured or at least drastically reduce their symptoms.
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What Is Depression?
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Antidepressants (Depression Medications)
Depression medications or antidepressants are drugs prescribed for treating depression. There are several types of drug classes of antidepressants including tricyclic antidepressants (TCAs), selective serotonin reuptake inhibitors (SSRIs), serotonin norepinephrine reuptake inhibitors (SNRIs), and monoamine oxidase inhibitors (MAOIs).
Side effects depend on the medication prescribed. Drug interactions, warnings and precautions, and pregnancy and breastfeeding safety should be reviewed prior to taking any medication.
How Does Cognitive Behavioral Therapy Treat Depression?Cognitive behavioral therapy (CBT) uses cognitive strategies to help people change patterns in the way they think and behavioral strategies to help people change behaviors that aren't helpful. CBT can help people with mild-to-moderate major depressive disorder.
DepressionDepression is an illness that involves the body, mood, and thoughts and affects the way a person eats and sleeps, the way one feels about oneself, and the way one thinks about things. The principal types of depression are major depression, dysthymia, and bipolar disease (also called manic-depressive disease).
Depression in ChildrenChildhood depression can interfere with social activities, interests, schoolwork and family life. Symptoms and signs include anger, social withdrawal, vocal outbursts, fatigue, physical complaints, and thoughts of suicide. Treatment may involve psychotherapy and medication.
Depression in the ElderlyDepression in the elderly is very common. That doesn't mean, though, it's normal. Treatment may involve antidepressants, psychotherapy, or electroconvulsive therapy.
Depression SlideshowWhat is depression? Get information on symptoms, signs, tests, and treatments for many types of depression including major depression, chronic depression, teen depression, and postpartum depression.
Depression QuizMany people do not recognize the symptoms and warning signs of depression and depressive disorders in children and adults. With proper diagnosis, treatments and medications are available. Take this quiz to learn more about recovery from depression.
Depression Tips SlidesThe right exercise, diet, and activities -- even playing with a pet --can help you recover from depression. Learn simple lifestyle changes you can do to improve your mood.
Foods to Fight DepressionFood cannot prevent depression, but a healthy diet may boost your mood. Foods like salmon, carrots, Brazil nuts and even chocolate may help ease the symptoms of depression.
Postpartum DepressionPostpartum depression is a form of depression that occurs within a year after delivery. It is thought that rapid hormone changes after childbirth may lead to depression. Symptoms of postpartum depression include crying a lot, headaches, chest pains, eating too little or too much, sleeping too little or too much, withdrawal from friends and family, and feeling irritable, sad, hopeless, worthless, guilty, and overwhelmed. Treatment typically involves talk therapy and medication.