Perihepatitis (Fitz-Hugh-Curtis syndrome) is a rare complication of sexually transmitted infections, mostly seen in women. Only 12 male cases have been reported to date, of whichChlamydia trachomatiswas confirmed in 2. We report a case of chlamydial perihepatitis in a male patient, occurring 1 month after Mpox and associated with the unusual LGV ST23 strain. Our case suggests that rectal Mpox lesions may facilitate chlamydial dissemination.