Abnormal hairshaft morphology

What it means

An abnormal structure of the hairshaft, i.e., of the nongrowing portion of a hair that protrudes from the skin.

Rare diseases that can present with this3

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