很少见的病例。Wells 综合征：In 1971, George Wells first described this syndrome as a recurrent granulomatous dermatitis with eosinophilia. Wells and Smith renamed it eosinophilic cellulitis in 1979.

The etiology is unknown. At least some cases may represent hypersensitivity to an arthropod bite or sting. A dermal infiltrate of histiocytes, eosinophils, and eosinophilic granules occurs between collagen bundles, which forms the classic flame figures. The eosinophilic infiltrate is almost always restricted to the epidermis and the dermis, but it has also been found in the subcutaneous tissue and the underlying muscle.

谢谢曾老师的病例。