Spread of STI that leads to ringworm in undesirable areas

Valentine’s Day VD?

If you’re looking for a reason to stay single this weekend, you might consider that sexually transmitted fungi are becoming more common—and they’re leaving quite the impression.

Experts are raising awareness about a particular outbreak of Trichophyton mentagrophytes genotype VII, which is noted as the largest known of its kind in Japan.

This troublesome fungus, known as TMVII, is the only type of sexually transmitted disease caused by fungi.

Cases of TMVII have surged in recent years across Europe, especially among men who have sex with men. The first reported case in the U.S. appeared in New York City in 2024. It seems that this persistent itch has also found its way to the Midwest.

Since the first STIs were detected in Minnesota in July 2025, the state has confirmed 13 cases and has 27 more under investigation.

Common symptoms include itchy, round, scaly patches that resemble ringworm on the skin. These patches can also develop into severe inflammatory lesions and abscesses.

Despite its misleading name, ringworm doesn’t stem from worms, but rather various fungi. Researchers note that the rash due to TMVII differs from standard ringworm and may be mistaken for eczema, potentially complicating treatment.

Health officials emphasize that anyone noticing a rash similar to TMVII—especially following sexual contact with someone exhibiting similar symptoms—should consider visiting an STI clinic for evaluation and treatment.

While the overall threat to the general public seems low, specific groups—like men who have sex with men, those using anonymous dating apps, and individuals with a history of STIs—may face increased risks.

Unlike other fungi tied to ringworm, TMVII is transmitted through close sexual encounters, leading to inflammatory rashes that might cause permanent scars.

The upside? TMVII can be treated with oral antifungal medications, and starting treatment early can make a big difference in managing symptoms. However, a lengthy treatment period of up to three months might be necessary to eradicate the infection completely.

To help curb the spread of TMVII, experts advise avoiding skin-to-skin contact, covering any affected rashes, and steering clear of shared items like clothing, towels, bedding, and razors.

Additionally, individuals with TMVII should wash their hands thoroughly after touching the affected area, to prevent spreading the fungus to other body parts.

The Minnesota Department of Health urges anyone with a scaly, coin-shaped rash located on the buttocks, genitals, limbs, torso, or face to seek prompt medical advice and notify their sexual partners.