Define occasional: of or relating to a particular occasion; created for a particular occasion â occasional in a sentence of or relating to a particular occasion; created for a particular occasion; acting as the occasion or contributing cause of somethingâ¦
The list of types of Mental illness mentioned in various sources includes: 1  Depressive disorders. 2  Depression. 3  Dysthymic disorder. 4  Bipolar disorder. 5  Cyclothymic disorder. 6  Anxiety disorders. 7  Panic disorder. 8  Social phobia. 9  Specific phobias.
and treatment of mental illnesses. Serious Mental Illness (SMI) Among U.S. Adults. While mental disorders are common in the United States, their burden of illness is particularly concentrated among those who experience disability due to serious mental illness (SMI).