What are the three main types of depression?

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  1. Dr. Mehmet Oz
     
    Dr. Mehmet Oz answered:

    Generally, depression is classified into three main categories:
    Major Depression: This is an episode that lasts longer than two weeks and exhibits at least five of the seven following symptoms: Sleep alteration, decreased interest in activities, feelings of guilt, decreased energy, difficulty concentrating, alteration in appetite, thoughts of suicide. One common symptom: early-morning awakenings (we're talking 3:30 am, not 5:15 am when the alarm clock buzzes at 5:35 am anyway).
    Situational Depression: This describes an episode that lasts longer than two months with the above symptoms, but comes after a person has suffered a significant life change, such as bereavement or retirement. Importantly, your symptoms improve with time since the major event, so most therapists feel that your long-term functioning is better if you can manage to get through this without drugs.
    Vascular Depression: This is depression that commonly occurs after a brain or blood-vessel disorder, such as a stroke, or after a heart attack or heart surgery. Patients with lesions in the left hemisphere of the brain, especially of the left prefrontal cortex, tend to have increased frequency and severity of depression. The greatest risk period of depression following a stroke appears to be the first two years afterward, peaking within the first three to six months.

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  2. Dr. Michael Roizen
     
    Dr. Michael Roizen answered:

    The truth is that depression is a lot like hot sauce - there are all different kinds and nuances, but they can be dangerous just the same. There's postpartumdepression, which 10 to 15 percent of recent mothers experience. There's seasonal affective disorder, which is brought on by lack of exposure to sunlight - most notably in northern climates during the winter (although some people actually have the reverse pattern - a summer depression with improvement in the winter). There's also depression brought on by medications, ranging from steroids to narcotics to alcohol to sleeping pills, which suppress dopamine and serotonin, mimicking the chemical reactions that cause depression.

    More Related Answers from Dr. Michael Roizen
    The truth is that depression is a lot like hot sauce - there are all different kinds and nuances, but they can be dangerous just the same. There's postpartumdepression, which 10 to 15 percent of recent mothers experience. There's seasonal affective... More
  3. National Academy of Sports Medicine
     
    The three main types of exercise are cardiorespiratory exercise such as jogging or biking, resistance exercise such as calisthenics and weight training, and flexibility training like yoga and stretching.
    More Related Answers from National Academy of Sports Medicine
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