Bimanual synkinesia

What it means

Involuntary movements of one hand that accompany and mirror intentional movements of the opposite hand.

Mirror movement refers to simultaneous contralateral, involuntary, identical movements that accompany voluntary movements. Erlenmeyer first used this term in 1879. The definition of mirror movement as involuntary, synkinetic mirror reversals of an intended movement of opposite side was coined by Cohen et al. in 1991. These movements are soft, neurologic signs, seen uncommonly in clinical practice.

Rare diseases that can present with this4

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Mirror hand movements · Mirror movements