Jessner lymphocytic infiltrate is an uncommon skin condition that presents as non-scaly red patches and lumps on the face, neck and upper back. They are usually painless and do not itch. Lesions may go through periods of remission and exacerbation over months or years. Total spontaneous resolution has also occurred in some cases.
The cause of Jessner lymphocytic infiltrate is unknown. It is classified as a benign T-cell lymphoproliferative disorder. Some cases have been associated with Borrelia infection, the cause of Lyme disease.
Jessner lymphocytic infiltrate plaques usually start off as defined, small, slightly raised red spots that gradually enlarge peripherally to create a well demarcated red plaque.