A 46-year-old man developed a severe, spreading infection of his thigh muscle caused by a rare fungus called Basidiobolus ranarum, likely from an insect bite years earlier that was neglected. The infection became life-threatening when bacteria also invaded the tissue, causing widespread muscle death and bloodstream infection. Doctors treated him with multiple antifungal medications, antibiotics, surgery, and eventually had to amputate his leg to save his life. After six weeks of intensive care combining several medications including potassium iodide and extended oral antifungal therapy, the wound finally healed.