The following<unk>  is provided as an overview of and topical guide to<unk><unk> :<unk><unk>  – mental<unk>  with periods of depression and periods of elevated mood. The elevated mood is significant and is known as mania or hypomania, depending on its severity, or whether symptoms of psychosis are present. During mania, an individual behaves or feels abnormally energetic, happy, or irritable. Individuals often make poorly thought out decisions with little regard to the consequences. The need for sleep is usually reduced during manic phases. During periods of depression, there may be crying, a negative outlook on life, and poor eye contact with others. The risk of suicide among those with the illness is high at greater than 6 percent over 20 years, while self-harm occurs in 30–40 percent. Other mental health issues such as anxiety<unk> s and substance use<unk>  are commonly associated. Also known as manic depression.
Outline of bipolar disorder
Treatment-resistant depression
Long-term depression
Double depression
Major depressive episode
Depression in childhood and adolescence
Atypical depression
Recurrent brief depression