Cyanide-induced parkinsonism-dystonia

What it is

A rare parkinsonian syndrome due to intoxication which develops in individuals surviving an acute cyanide intoxication episode or due to chronic exposure to small cyanide doses. It presents several weeks after acute exposure with progressive typical clinical features of parkinsonism including bradykinesia, rigidity, dystonia, hypomimia, hypokinetic dysarthria, postural instability and retropulsion but no resting or postural tremor. Brain MRI reveals bilateral lesions in the pallidum, posterior putamen, substantia nigra, subthalamic nucleus, temporal and occipital cortex, and cerebellum.

Key facts

Age of onset

All ages

Classified as

Disease

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references