Superior rectus muscle underaction

What it means

Reduced movement of the superior rectus muscle which improves on testing ductions, typically associated with neurogenic palsy.

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