A 40-year-old male with a past medical history of HIV presented for evaluation of a non-pruritic rash. Six days ago, he suddenly felt a stinging sensation at the back of his head and neck similar to a bug bite. He then noticed bumps were starting to form and developed a shock-like pain in the area. Three days ago, the rash spread from the back of his head towards his chest. Yesterday, the rash spread further and now extends medially and upwards covering most of his left neck and ear. The pain continued to worsen, at which point the patient shaved the left side of his head in an attempt to help the rash. Today, the pain became unbearable, which prompted his visit to the emergency department for further evaluation and management.
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