This case report describes a rare fungal infection caused by Sporothrix brasiliensis in a 35-year-old man living with HIV/AIDS. The infection spread throughout his body, affecting his skin, lungs, brain, and testicles. Doctors initially thought the testicular involvement was cancer and removed the testicle, but lab tests confirmed it was a fungal infection. The patient was successfully treated with antifungal medications and remains disease-free one year later.