Hyperconvex toenail

What it means

When viewed on end (with the tip of the toe pointing toward the examiner's eye) the curve of the toenail forms a tighter curve of convexity.

Rare diseases that can present with this2

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