We report a clinical picture of a mowed meadow pattern of the tongue in a 29-year-old sexually active man who has sex with men. The painful lesions also called "Plaques en prairie fauchée", occur in the context of the discovery of a postive HIV serology. The diagnosis of secondary syphilis was confirmed by a positive syphilis serology (nontreponemal RPR test title of 64) and a positive Treponema pallidum PCR, amplifying the tpp47 gene, on a tongue swab. The lesions completely resolve with a penicillin treatment.

# Declaration of Competing Interest

No conflicts of interest.

# Funding

No funding.

# Ethical approval

Written informed consent was obtained from the patient for publication of this case report and accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal on request

# Consent

Informed consent was obtained for publication of this case report and accompanying images.

# CRediT authorship contribution statement

Eric Farfour: Writing - original draft. David Zucman: Writing - review & editing.