New Form of Sexually Transmitted Ringworm Detected in New York

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New Form of Sexually Transmitted Ringworm Detected in New York: A Health Alert


A rare discovery has been made in New York City: the first known U.S. case of a sexually transmitted fungal infection, specifically a new form of ringworm. This revelation has sparked concern among health experts and the general public alike. The infection, identified as Trichophyton mentagrophytes type VII (TMVII), was detected in a man in his 30s after his return from a trip abroad. This article delves into the details of this case, the nature of the infection, and its implications.

The Discovery

The first U.S. case of this sexually transmitted ringworm was reported in a study published in the journal JAMA Dermatology. The patient, a man in his 30s from New York City, developed an itchy skin rash on his penis, buttocks, and limbs after traveling to England, Greece, and California. Upon his return, the rash persisted and was later identified as tinea, a common fungal skin infection, but with unusual characteristics.

Characteristics of the Infection

Unlike traditional ringworm, which typically forms neat circular lesions, the tinea caused by TMVII can be mistaken for eczema. This misidentification can lead to delays in appropriate treatment, exacerbating the infection. The study, conducted by experts at New York University’s (NYU) Langone Health, highlighted the highly contagious nature of this fungal infection and its resistance to standard treatments.

Transmission and Spread

The infected individual reported having multiple male sexual partners during his trip, though none had similar symptoms. This form of ringworm has been spreading across Europe, with France reporting 13 cases in 2023, primarily among men who have sex with men. The New York case marks the first recorded instance in the U.S., prompting health officials to raise awareness about this emerging threat.

Challenges in Treatment

TMVII has proven to be challenging to treat, often requiring extended periods of medication. In this case, the patient initially took fluconazole for four weeks with no improvement, followed by six weeks of terbinafine, and finally eight weeks of itraconazole. It took over four and a half months for the infection to clear up.

Importance of Awareness

Dr. Avrom Caplan, the study’s lead author, emphasized the need for increased awareness among both patients and healthcare providers. Patients are often reluctant to discuss genital issues, which can lead to underreporting and misdiagnosis. Physicians are encouraged to directly inquire about rashes around the groin and buttocks, especially in sexually active individuals who have recently traveled.

Potential Stigma

The emergence of this infection raises concerns about potential stigma, particularly in communities recently impacted by mpox (formerly known as monkeypox). However, Caplan stressed that TMVII is a different pathogen and there is currently no evidence to suggest it is widespread or endemic in the U.S.

Related Fungal Infections

Another related fungal infection, Trichophyton indotinea, has been reported in the U.S. This infection, widespread in India, causes similar itchy and contagious rashes but often resists terbinafine treatment. Caplan's team has identified several cases in New York City, highlighting the need for vigilant diagnosis and treatment.


The discovery of the first U.S. case of sexually transmitted ringworm underscores the importance of awareness and timely medical intervention. As fungal infections continue to evolve and spread, both healthcare providers and the public must stay informed about the latest developments. If you experience persistent, itchy rashes, especially after recent travel, seeking medical advice promptly is crucial.

For more updates on emerging health threats and medical breakthroughs, stay tuned to reliable health news sources.

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