The aim of the present study was to examine the value of the sympathetic skin response (SSR) in the diagnosis of @entity6865 ( @entity6865 ). @entity1 AND METHODS: SSR was recorded in 20 normal subjects and in 24 @entity1 with predominantly chronic @entity6865 . In 3 @entity1 with @entity6865 , additional recordings of the SSR were performed before and several times after administration of local anaesthetics via a plexus catheter on the diseased side. SSR was recorded with standard EMG apparatus. Disc electrodes were positioned on the middle of the volar and dorsal surfaces of the hands and feet. Electrical stimuli were applied to the middle of the forehead at irregular intervals longer than 60 s. RESULTS: In normal subjects inter- and intraindividually different monophasic, biphasic and triphasic potentials without difference in the waveform between sides were recorded. SSR abnormalities were found in 15 @entity1 with @entity6865 and correlated with the severity of the disease. In @entity1 with @entity3986 SSR was predominantly normal, while in most of those with intermediate @entity3986 differences in the SSR waveform between sides were observed. In the presence of severe @entity3986 SSR amplitude was predominantly decreased on the affected side. Following the administration of local anaesthetics via a plexus catheter, the differences in SSR waveform became smaller in @entity1 with initial distinct side difference of the waveform. However, differences in SSR amplitudes or latencies between sides were not affected. CONCLUSIONS: Side differences in SSR waveform could be due to a mild, reversible unilateral @entity409 , whereas differences in SSR amplitude or latency indicate more serious damage to sudomotor activity, possibly due to dysfunction of autonomic fibres. In @entity1 with @entity3986 sweat secretion is predominantly normal, while in severe @entity3986 more serious damage to the sweat secretory system can be observed. SSR provides useful information on @entity409 in @entity1 with @entity6865 . However, as there is no consensus on the clinical criteria for diagnosis of @entity6865 , it is also not possible to determine the diagnostic value of SSR in the diagnosis of @entity6865 .

[The sympathetic skin response--a useful method for the diagnosis of XXXX ?].

@entity1 :: ('9606', 'Species') :: ['patients', 'PATIENTS'] @entity3986 :: ('MESH:D009136', 'Disease') :: ['slight dystrophy', 'dystrophy'] @entity409 :: ('MESH:D008107', 'Disease') :: ['sudomotor dysfunction'] @entity6865 :: ('MESH:D012019', 'Disease') :: ['RSD', 'reflex sympathetic dystrophy']
@entity6865 :: (MESH:D012019,Disease) :: ['reflex sympathetic dystrophy']
