Hyperostosis

What it means

Excessive growth or abnormal thickening of bone tissue.

Hyperostosis refers to a localized bone overgrowth process (as opposed to sclerosis, which refers to a generalized disturbance with increased bone density).

Rare diseases that can present with this14

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: Bone Hypertrophy