A 54-year-old man developed a serious skin infection on his hand caused by Candida, a normally harmless fungus, because he had been taking corticosteroid injections for 15 years for breathing problems. Despite antibiotic treatment, the swelling and pain continued. Doctors discovered it was a fungal infection through lab tests and treated it with antifungal medication (fluconazole) after draining the infection, which completely healed within two weeks.