Decorticate rigidity

What it means

A type of rigidity in which the arms are in flexion and adduction and the legs are extended. This signifies a lesion in the cerebral white matter, internal capsules, or thalamus.

Decorticate posturing

Rare diseases that can present with this1

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