A 55-year-old male, known case of hypertension, diabetes for 20 years came complaining of sudden severe pain in his right big toe. He is obese, smokes 2 packs/day and drinks 2 cans of beer every day. Based on the history and inspection, what is the most likely diagnosis?

What investigation would you do to confirm the diagnosis? *This image based case is from Docplexus editorial team for educative purpose only Sources: Letstalkmedicine