Juvenile temporal arteritis with hypereosinophilic syndrome masquerading as an epidermal inclusion cyst of the scalp

A 34-year-old man came to the outpatient department with subcutaneous nodules in the temporal area. He did not complain of any other symptoms. Computed tomography scan revealed a nodule of 40.5 HU in the temporal region of the scalp. A possibility of an epidermal inclusion cyst was given. The lesion was excised and the biopsy revealed vasculitis with eosinophilia without giant cell formation. A final diagnosis of juvenile temporal arteritis with hypereosinophilic syndrome was given based on the clinical, radiological, and histopathological findings.