Jessner’s occurs primarily on sun-exposed sites such as the head, neck and upper back. It appears as one or several non-scaly red raised spots, plaques and less commonly larger lumps. Circular lesions with a central clearing are commonly seen.
Lesions do not usually cause symptoms, but some affected people experience burning or itching. Individuals are otherwise well and have no internal symptoms. Onset or worsening of lesions following sun exposure commonly occurs. There can be a seasonal variation in severity.