<unk>  is a term which refers to either the study of mental illness or mental distress, or the manifestation of behaviours and experiences which may be indicative of mental illness or psychological impairment.
It is also the name of an academic journal that specialises in the understanding and classification of mental illness in clinical psychiatry.
Psychopathology
Personality
Symptom
Disease
Sex and illness
Etiology
Cancer risk factors
Psychosomatic illness