Contact dermatitis

What it means

An inflammatory process in skin caused by an exogenous agent that directly or indirectly injure the skin. If the offending agent is identified and removed, the eruption will resolve. An unusual or patterned eruption may be a clue to the presence of a contact dermatitis. Patch testing may be helpful in the differential diagnosis.

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