Linear IgA deposits along the epidermal basement membrane zone

What it means

Presence of IgA antibodies in the dermoepidermal junction that are distributed in a linear pattern. This feature can be appreciated by immunofluorescence microscopy.

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