| Summary points: | An 18-year-old male with grand mal epilepsy presents with fever lasting for 10 days, nausea, diarrhoea, and abdominal pain. He had a 2-day history of maculopapular rash with oedema of the face, which he attempted to self-treat with amoxicillin 500 mg TID. Medical history, current medications, physical examination, lung x-ray, laboratory data, other routine analysis, and treatment are described. The authors discuss a rare case of carbamazepine-induced severe rash, eosinophilia, and systemic symptoms associated with high serum procalcitonin levels, initially misdiagnosed as sepsis. |