psychomotor retardation definition
Psychomotor retardation (also called psychomotor impairment) is a visible slowing of physical activity such as movement and speech. It may have either a mental or organic, cause. Psychomotor retardation occurs as a symptom of many disorders ranging from genetic syndromes to mental illness to medications. It can also be a symptom of muscular degeneration or neurological disorders such as Parkinson's disease.