After Unprotected Sex, 50-Year-Old Has Rash, Severe Weakness - Medscape Reference

A 50-year-old man who is unhoused presents with skin rash, significant weight loss, diarrhea, and severe weakness. He has multiple sex partners and does not use any protection. What's the diagnosis?

Editor's Note:The Case Challenge series includes difficult-to-diagnose conditions, some of which are not frequently encountered by most clinicians but are nonetheless important to accurately recogniz… [+1299 chars]

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