The document provides a detailed case study of a 50-year-old male, Ramesh, who presents with pain, black discoloration, and ulcers on his left foot, indicating probable peripheral arterial disease due to diabetes and hypertension. The patient has a history of chronic smoking, and clinical examination reveals features of dry gangrene and ischemia with amputations previously performed. The management plan includes smoking cessation, blood sugar control, antiplatelet therapy, and potential surgical interventions.