Answer:
Mental disorder
Also called: mental illness
A wide range of conditions that affect mood, thinking and behaviour.
MOST COMMON TYPES
Clinical depression
A mental health disorder characterised by persistently depressed mood or loss of interest in activities, causing significant impairment in daily life.
Anxiety disorder
A mental health disorder characterised by feelings of worry, anxiety or fear that are strong enough to interfere with one's daily activities.
Bipolar disorder
A disorder associated with episodes of mood swings ranging from depressive lows to manic highs.