“Depression” is a common mental health condition. However, the word refers to many types of mood issues, rather than just one straightforward condition. In fact, there are many types of depression, depending on symptoms, severity, cause and duration of the illness.
According to the Diagnostic and Statistical Manual of Mental Disorders (DSM), the following are some of the types of depression:
Major Depressive Disorder
When people use the term depression, they usually mean a Major Depressive Disorder. Unlike short-term feelings of sadness, which can be due to any situation that can cause one to feel rightly sad and upset, major depressive disorder is an intense and debilitating condition affecting many aspects of one’s mood, energy and physical functioning.
A person with Major Depressive Disorder can suffer from feelings of hopelessness and despair, self-incriminating thoughts, crying spells, fatigue, weight loss, sleep disturbances, lost of interest in activities and relationships, inability to work, and thoughts of suicide. Major Depressive Disorder, also called clinical depression, is diagnosed if the debilitating symptoms are manifested by the patient for at least two consecutive weeks and causes significant distress and/or impairment in functioning.
A less severe form of depression is called Dysthymic Disorder or Dysthymia. The feelings of sadness and helplessness in Dysthymia are less debilitating, and are often merely aggravated by other physical or mental illnesses. Symptoms of Dysthymia come and go, and vary in intensity per episode. However, it can be a chronic disease that runs in families. Diagnosis requires at least two years of chronic low mood. People with dysthymia tend to underfunction at home and at work, due to low energy, low mood, chronic irritability and negativity, low motivation, sleep issues, low self-esteem and other symptoms. If left unmanaged, Dysthymia can progress to a Major Depressive Disorder.
Bipolar Depression, also called manic-depressive disorder or bipolar disorder, is a mood disorder that is characterized by cycles of extreme elevated moods (called mania) and depressive episodes. During the manic stage of the disorder, patients can exhibit symptoms like extreme alertness, difficulty sleeping, increased energy and erratic euphoria. But this “high” is often followed by an extreme low typical of a Major Depressive Disorder. Bipolar Depression comes in two types – Bipolar I and Bipolar II. The first is a very disturbed state in which manic episodes can lead to high risk behaviors, highly inappropriate behaviors and troubles with the law (picture a teenager standing naked on a neighbor’s rooftop singing at the top of his lungs). Bipolar II is characterized by more eccentric-looking behavior that is out of character for the person (picture someone enthusiastically filling her entire house with antiques that she’s thinking of selling in order to make an enormous fortune – even though she’s never done anything like this before).
Loved ones of people with Bipolar Depression often miss the illness in the patient, because the manic stage is mistaken for a sign of recovery. But note that the mania stage has a particular irrational urgency to it, and is not to be mistaken for actual happiness. In fact, a depressed person with Bipolar Depression is anxious, irritable and prone to self-defeating behaviors during their emotional high.
Seasonal Affective Disorder (SAD)
Seasonal Affective Disorder (SAD) refers to depression that only comes during particular times of the year. For instance, there are patients who exhibit symptoms of depression only during the cold winter months, but they are otherwise fine during the summer. In other cases the opposite is true; it’s the summer that brings in the blues. In tropical countries, the rainy season can be the most troublesome part of the year.
Psychotic Major Depression (PMD)
There are occasions when the depression is so intense; it causes a loss of contact with reality. A person with Psychotic Major Depression may experience hallucinations (sensing things that don’t really exist) or delusions (irrationally interpreting events and observations). Psychotic symptoms in PMD are often temporary, and will go away once the cause of the depression is addressed. The condition is not to be confused with schizophrenia, which can also cause depression.
A kind of depression that is difficult to diagnose and treat is called atypical depression. As the term implies, atypical depression is depression whose symptoms don’t always follow what is traditionally associated with clinical depression. The symptoms also appear to come and go, and can be lifted by positive life events. It is believed that atypical depression is primarily biological in origin, a product of chemical imbalance in the brain.
Symptoms of atypical depression may include loss of energy, unexplained and uncontrollable crying, insomnia or hypersomnia, irritability, unexplained aches and pains, difficulty concentrating and loss of interest in daily tasks.