For the first time, a rare and highly contagious sexually transmitted fungal infection has been detected in the United States. Identified as Trichophyton mentagrophytes type VII (TMVII), the infection was diagnosed at NYU Langone Health in New York City and detailed in JAMA Dermatology, where it was described as a “hard-to-treat” condition.
The patient, a man in his 30s from New York City, developed a red, itchy rash on his legs, groin, and buttocks following sexual encounters with multiple partners during trips to England, Greece, and California. Interestingly, his partners did not show any similar symptoms. Genetic testing confirmed the presence of the rare TMVII fungus. After a four-and-a-half-month course of antifungal medication, the patient made a full recovery.
This case is linked to Trichophyton indotineae (T. indotineae), a similar infection first found in India and recorded in the U.S. last year. T. indotineae also causes itchy, contagious rashes and often resists treatment with terbinafine.
Dermatologist Avron Caplan, a co-author of the study, explained that the TMVII rash may resemble an eczema flare with circular formations. While the infection is not life-threatening, it can lead to permanent scarring. Caplan noted that TMVII can spread to various parts of the body, including the face (ringworm), groin (jock itch), and feet (athlete’s foot).
“This new case presents a greater challenge for dermatologists,” Caplan remarked. Nonetheless, he reassured the public, stating, “There’s no evidence that this is widespread or that people need to be overly concerned.” He urged individuals to seek medical attention if they experience persistent itchy eruptions, particularly in the groin area. “If people are having itchy eruptions in areas like the groin, and it’s not getting better, see a doctor,” Caplan advised.
The emergence of TMVII in the U.S. highlights the importance of awareness and timely treatment to manage and prevent the spread of this rare fungal infection.
