Adrenal insufficiency secondary to inappropriate oral administration of topical exogenous steroids presenting with hypercalcaemia.

A 59-year-old Caucasian gentleman presented with malaise, fatigue and proximal muscle weakness. He had history of long-standing roseate psoriasis treated with topical clobetasol propionate (dermovate). On admission, he had significant postural hypotension, and hypercalcaemia. Endocrinological investigation revealed hypercalcaemia, a serum cortisol of <30 nmol/l, a flat short synacthen test and undetectable adrenocorticotropic hormone. He was treated with hydrocortisone. The abrupt withdrawal of the topical steroids by the patient precipitated the addisonian crisis. Further enquiry documented inappropriate oral administration of clobetasol for more than 10 years in addition to prescribed topical usage.