@entity7364 is a @entity922 characterized by @entity2473 of the laryngeal muscles during phonation, producing a broken pattern of speech sometimes termed laryngeal stuttering. Fourteen @entity1 with the diagnosis of @entity7364 based on voice quality were referred for evaluation; detailed clinical and electrophysiologic evaluations were performed. Laryngeal electromyographic (EMG) testing failed to demonstrate any spontaneous activity in the 14 @entity1 tested. Seven @entity1 (50%) had normal number and amplitude of motor unit potentials. Four of these had disparate amplitudes when compared with the other side, and two had complex motor unit potentials. The other seven @entity1 (50%) had abnormal findings, including three @entity1 with abnormally increased amplitude. Two @entity1 had asynchronous activity characteristic of a @entity400 . One @entity1 had synchronous bursts of activity also affecting the diaphragm, later diagnosed as pyramidal and @entity21 . One @entity1 had bursts of activity, and later presented with diffuse @entity2045 . Laryngeal EMG therefore seemed to be a more precise way of evaluating @entity1 presenting with a tremulous voice pattern termed @entity7364 . Clinical observation and EMG data demonstrated that @entity7364 is not a " @entity508 . We identified @entity1 with @entity400 (2), pyramidal and @entity21 (1), and @entity3148 (1). The remainder of the @entity1 had clinical and EMG findings consistent with @entity3519 , a @entity16 characterized by abnormal, often action-induced, @entity2358 or uncontrolled @entity2473 . We classify these @entity1 as having "focal @entity3519 " when the disorder occurs in isolation. It may also present as a component of a generalized @entity3520 .

Electromyographic findings in focal @entity3519 ( XXXX ).

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity3520 :: ('MESH:D020821', 'Disease') :: ['dystonic syndrome'] @entity2045 :: ('MESH:D009207', 'Disease') :: ['myoclonus'] @entity2358 :: ('MESH:D020820', 'Disease') :: ['involuntary movements'] @entity508 :: ('MESH:D009128', 'Disease') :: ['spastic" disease'] @entity16 :: ('MESH:D009422', 'Disease') :: ['neurologic disorder'] @entity7364 :: ('MESH:D055154', 'Disease') :: ['spastic dysphonia', 'Spastic dysphonia'] @entity400 :: ('MESH:D014202', 'Disease') :: ['tremor disorder', 'tremor'] @entity2473 :: ('MESH:D013035', 'Disease') :: ['spasms'] @entity3148 :: ('MESH:D004831', 'Disease') :: ['myoclonic disorders'] @entity3519 :: ('MESH:D004421', 'Disease') :: ['laryngeal dystonia', 'dystonia'] @entity21 :: ('MESH:D001480', 'Disease') :: ['extrapyramidal disease'] @entity922 :: ('MESH:D013568', 'Disease') :: ['clinical speech disorder']
@entity7364 :: (MESH:D055154,Disease) :: ['spastic dysphonia']
