A<unk> , also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder where a disturbance in the person's<unk>  is the main underlying feature. The classification is in the Diagnostic and Statistical Manual of Mental Disorders (DSM) and International Classification of Diseases (ICD).<unk> s fall into seven groups, including; abnormally elevated<unk> , such as mania or hypomania; depressed<unk> , of which the best-known and most researched is major depressive disorder (MDD) (alternatively known as clinical depression, unipolar depression, or major depression); and<unk> s which cycle between mania and depression, known as bipolar disorder (BD) (formerly known as manic depression). There are several sub-types of depressive disorders or psychiatric syndromes featuring less severe symptoms such as dysthymic disorder (similar to MDD, but longer lasting and more persistent, though often milder) and cyclothymic disorder (similar to but milder than BD). In some cases, more than one<unk>  can be present in an individual, like bipolar disorder and depressive disorder. If a<unk>  and schizophrenia are both present in an individual, this is known as schizoaffective disorder.<unk> s may also be substance induced, or occur in response to a medical condition. English psychiatrist Henry Maudsley proposed an overarching category of affective disorder. The term was then replaced by<unk> , as the latter term refers to the underlying or longitudinal emotional state, whereas the former refers to the external expression observed by others.
Mood disorder
Borderline personality disorder
Depression 
Diving disorders
Anxiety disorder
Menstrual disorder
Thought disorder
Psychosexual disorder