dystonic disorder nocturnal paroxysmal dystonia dystonias, nocturnal paroxysmal hypnogenic paroxysmal dystonias dystonias, hypnogenic paroxysmal nocturnal paroxysmal dystonias SCTID:230500006 UMLS:C0393777 GARD:0027970 dystonias, sleep-related MONDO:0043969 hypnogenic paroxysmal dystonia sleep-related dystonia dystonia, sleep-related MESH:D020183 paroxysmal dystonias, hypnogenic sleep-related dystonias A parasomnia characterized by paroxysmal episodes of choreoathetotic, ballistic, dystonic movements, and semipurposeful activity. The episodes occur during non-rapid eye movement sleep and typically recur several times per night. dystonia, hypnogenic paroxysmal paroxysmal dystonia, hypnogenic dystonia, nocturnal, paroxysmal sleep related dystonia paroxysmal dystonias, nocturnal paroxysmal dystonia, nocturnal MEDGEN:95991 dystonia, nocturnal paroxysmal sleep disorder