Psychiatry deals with the prevention, diagnosis and treatment of mental conditions and illness-es related to emotional health, stress, sleep, behaviour and mood. These disorders have a significant and often detrimental effect on an individual's emotional, cognitive, social and be-havioural abilities. Examples of disorders bipolar disorder and depression, eating disorders like bulimia, addiction disorders like drug and alco-hol abuse. Treatment involves medication as well as psychological therapy and social inter-vention. Other treatment include psychothera-py to help a person change behaviour and over-come problems..