The present invention relates to a movement disorder monitor, and a method of measuring the severity of a subject's movement disorder. The present invention additionally relates to a treatment delivery system for treating a subject in response to changes in the severity of a subject's symptoms. The present invention further provides for a system and method, which can accurately quantify symptoms of movement disorders, utilizing continuously obtained kinetic information to be analyzed, accurately distinguishing between symptoms of movement disorders and activities of daily living, relating quantified symptoms to a standard clinical rating scale, and correlating a subject's symptoms with certain physiological and environmental factors. The present invention still further provides for home monitoring of symptoms in subjects with these movement disorders in order to capture the complex fluctuation patterns of the disease over the course of days, weeks, months, or years.