To first begin to look at the reasons behind mood disorders, let us first see its definition, "a disturbance in the person's mood is hypothesized to be the main underlying feature." Two examples include major depressive disorder and bipolar disorder, which can be the result of drug or alcohol abuse.
Mood disorders that are a result of substance abuse can directly be traced back to a psychoactive drug. Examples of this are: amphetamines, metamphetamines, and cocaine. From there the chemical can cause a chemical imbalance that may cause the user to have delusions and extreme paranoia.
Major depressive disorder patients are typically a higher risk for suicide, however, with the treatment of a trained health professional, these tendencies are dramatically reduced. Also included under major depressive disorder are: melancholic depression which is a loss of pleasure, psychotic major depression in which case the sufferer has delusions or hallucinations, catatonic depression which is rare and a severe form of major depression.
Bipolar disorder used to be manic depression and has alternating periods of feeling manic and being depressed. There are three types of bipolar disorder: bipolar I which is one or more manic episodes with or without depression, bipolar II which is recurrent hypomania and depressive episodes, and cyclothymia which is hypomanic and dysthumic episodes.
Now that we have reviewed the major mood disorders, let us look at the reasons behind mood disorders. These reasons can be as simple as genetic factors. Some mood disorders can be passed down and it does not necessarily have to be from the parent as it can skip generations. Also, neurotransmitters can be the reason behind a mood disorder. It can also be from a chemical imbalance.
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