This form is an inherited form of PMLE. As its nature is inheritable, it begins early in life during childhood or adolescence. The symptoms are same as that of PMLE, but the rash occurs more on the face, especially on the lips. It re-occurs in spring and summer, while in tropical climates it persists round the year. It is treated using medications that include corticosteroids, thalidomide, antimalarial drugs, beta-carotene, and UV, depending on the severity of the allergy.