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.
Types of anxiety disorders. Common diagnosis of mental illness, under the category of anxiety disorders, includes: 1  Panic disorder. 2  Obsessive-compulsive disorder (OCD). 3  Post-traumatic stress disorder (PTSD). 4  Social phobia (social anxiety disorder). 5  Generalized anxiety disorder (GAD).