Mental and health conditions

Major depressive disorder is a mood disorder characterised by at least 2 weeks of depressed mood and/or diminished interest and pleasure in activities.

Bipolar mood disorder is a lifelong illness, which may have an episodic, variable course. The presenting episode may be manic, hypo manic, depressive or mixed. By definition, a diagnosis of bipolar disorder requires either a current or previous episode of mania or hypomania.

Schizophrenia is a chronic severe mental disorder characterized by disturbances in thought, perception, emotions, drive, behaviour, and withdrawal from reality. Patients experience episodes of psychosis with varying combinations of positive, negative, and cognitive symptoms. The illness commonly follows a relapsing and remitting course, resulting in significant impairment in social, occupational, and interpersonal functioning.

Delirium or acute confusion state is a condition characterised by altered level of consciousness, disorientation to time, place and sometimes to person.

These are agitated and acutely disturbed patients, who may or may not have a psychiatric condition.