This can be one of many signs indicating a wide variety of underlying disorders in the brain or nerves, secondary to certain medical conditions, or can be a reaction to certain types of medication.Ĭlassifying myoclonus is difficult because the causes and responses to therapy vary widely. More severe cases can affect movement and severely limit a person's ability to eat, talk, or walk. They contractions begin in one region of the body and spread to muscles in other areas. Pathologic myoclonus may involve persistent, shock-like contractions in a group of muscles and is more widespread in general.This form occurs in healthy people, causes no difficulties, and does not require medical treatment. Examples are hiccups and the jerks or “sleep starts” that some people experience while drifting off to sleep. Physiologic myoclonus involves quick muscle twitches followed by relaxation.Myoclonus can be broadly categorized into two types:
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