Delayed-onset posthemiplegic dystonia and imitation synkinesia.

Delayed onset dystonia.

Delayed onset dystonia secondary to neonatal anoxia.

D is a movement disorder, which is defined as an “involuntary” sustained muscle contraction affecting one or more sites of the human body. Frequently it originates twisting and respective movements or abnormal postures.1 The dystonic phenomenon occurs during the wake state and increases with fatigue and stress, while it improves with relaxation, hypnosis, and sleep. Childhood dystonia is charac...

Delayed-onset dystonia in patients with "static" encephalopathy.

Eight cases of persistent dystonia appearing one to 14 years after non-progressive cerebral insults are described. Five were due to perinatal anoxia, one to trauma, and two to cerebral infarction. This phenomemon of delayed-onset dystonia has not been described previously, although review of earlier literature reveals several probable examples. Delayed-onset dystonia due to perinatal anoxia is ...

Delayed cyanide induced dystonia.

A 16 year old man ingested 1 g potassium cyanide in 1969. A few days after an apparently full recovery he developed a severe dystonia syndrome. He had a positive response to an apomorphine test and showed improvement with levodopa treatment. A 21 year follow up showed minimal neurological sequelae; CT showed bilateral putaminal lucencies. Visual and brain stem auditory evoked potentials were no...

Early onset torsion dystonia (Oppenheim's dystonia)

Early onset torsion dystonia (EOTD) is a rare movement disorder characterized by involuntary, repetitive, sustained muscle contractions or postures involving one or more sites of the body. A US study estimated the prevalence at approximately 1 in 30,000. The estimated prevalence in the general population of Europe seems to be lower, ranging from 1 in 330,000 to 1 in 200,000, although precise nu...