Part 1: Signs, symptoms & strategies
Signs and symptoms of abnormal behavior
A syndrome is a standard cluster of signs and symptoms that occur in a regular pattern, are typically associated with a particular causal factor, and/or occur in a particular subset of the population. Examples include degenerative arthritis of the knee in an ex-athlete, hypertensive headaches in an overweight woman with a high-salt diet, and paranoid schizophrenia in a homeless young man who abuses amphetamines and alcohol. A syndrome becomes a disorder when it interferes with important life functions of the patient, such as shortening life, decreasing the quality of health and well-being, or interfering with job, family, or social functioning.

