Persons most commonly affected: All age groups and both sexes.

Organ or part of body involved: Nervous system

Symptoms and indications: Constant moving, foot tapping, inablity to sit still, and hand movement.

Causes and risk factors: Anxiety - general everyday anxiety may cause restlessness as a symptom, anxiety disorders - almost all anxiety disorders may cause restlessness symptoms, nervousness, hyperactivity, sleep problems, insomnia, boredom, attention deficit disorder, certain physical diseases, certain medications, certain illicit drugs, amphetamine intoxication, and certain drug interactions (type of Adverse reaction),.