Signs of mental illness

The most common types of illnesses according to the World Health Organization (WHO) are:

About 16 to 20 percent of all people are affected by mood disorders at least once in their lives. Their mood is either depressed and they are disinterested and joyless or they are in unusually high spirits (mania), with symptoms such as restlessness and having an exaggerated opinion of themselves. Bipolar disorder is characterised by alternating phases of depression and mania.

More information on the topics of Depression and Burnout

Severe personality or behavioural disorders have different causes such as genetic factors, conditions of development or brain damage. Those affected have usually suffered since childhood from serious impairments which are perceptible in all areas of their lives, leading to frequent conflicts with other people or society.

Neurosis is a collective term for lots of minor mental disorders without any recognisable organic cause. A typical feature of the various clinical pictures is that behaviour is dominated by anxiety and compulsions. Whereas a stress-related disorder is always triggered by a specific negative event, other disorders can also be triggered by diffuse anxiety or exaggerated fears.

The consumption of drugs like alcohol, tobacco and medication can lead to addiction as well as mental illnesses and behavioural disorders. Examples include a compulsive urge to consume something, a lack of self-restraint, withdrawal symptoms or a disregard for one’s interests and obligations.

Psychosis is a serious illness which manifests itself in a loss of contact with reality and a change in personality. The ability to think and to perceive what is going on around oneself is typically impaired. Unlike neuroses, psychoses presumably have physical causes.