[Paraffin oil injecions due to bigorexia may cause hypercalcaemia].

Paraffin oil injections may cause severe hypercalcaemia, likely due to development of granulomas at injection sites, activating 1,25 dihydroxyvitamin D and increasing calcium uptake from gut, kidney and bone. This is a case report of a 39-year-old male with severe hypercalcaemia and renal failure due to paraffin oil injections. He was treated with prednisolone (25-50 mg daily), but the disease recurred the next two summers probably due to erroneous vitamin D supplement and sun exposure. The disease course and prognosis are unknown. Treatment options are discussed, and paraffin oil injections should be avoided.