Am J Health-Syst Pharm. 2005; 62:2006-10 Case report. A 31-year-old man arrived at the emergency department (ED) with a one-week history of sinus infection, headache, decreased oral intake, and ear pain. He reported taking ibuprofen and pseudoephedrine, with partial relief of his symptoms. On the day of admission, he developed a severe headache, nausea, vomiting, and confusion.He had no significant past medical history, was physically fit, and reported taking multivitamins and calcium supplements. The patient was also taking bisacodyl and caffeine tablets and drank an energy drink daily. He denied taking hormonal or protein supplements.The patient reported having penicillin allergy, described as facial hives, and sulfonamide allergy (reaction unknown). Physical examination in the ED revealed a blood pressure of 118/73 mm Hg, a heart rate of 88 beats/min, a respiration rate of 18 breaths/min, a temperature of 101.2°F, and an oxygen saturation rate of 98% on room air. His neck was not rigid, lungs were clear, and abdominal examination was normal.