A 65-years-old woman with a medical history of idiopathic thrombocytopenic purpura and psoriasis in treatment with topical glucocorticoids presented with a three-month history of burning, generalized erythematous, scaly rash, and chills. A few weeks before the rash, the patient presented petechiae on her thighs due to a low platelet count (28.000 platelets per microliter), for which she started treatment with prednisone 25 mg/week. The rash was initially treated with topical ointments including clobetasol, urea, salicylic acid, ammonium lactate, and propylene glycol without improvement.
