Catalog

Propriospinal myoclonus

No MMS code

Link to WHO Definition

Propriospinal myoclonus – http://id.who.int/icd/entity/1446577774

Propriospinal myoclonus (PSM) is a rare movement disorder characterised by myoclonic jerks in muscles. Characteristic features include repetitive, arrhythmic flexion jerks of the trunk, hips, and knees. The signal spreads slowly along propriospinal pathways. Propriospinal myoclonus is usually idiopathic but can also be secondary to lesions. In many cases it has a psychogenic cause.