Derm Dx: Itchy, red patches on the face and nose

A swollen, red, warm, hardened and painful rash with sharply demarcated advancing margins that can appear on the face and spreads across the cheeks and bridge of the nose. Rash onset occurs after an initial 48-hour period in which symptoms including high fever, shaking, chills, fatigue, headaches and vomiting develop. The patient’s lymph nodes may be swollen. What's your diagnosis? ...