Internal medicine

Rash

Disease

Proctitis

Dermatology

Immunology

Men who have sex with men

Syphilis

Ulcerative colitis

Cohort

Human immunodeficiency virus (HIV)

Medicine

Clinical Infectious Diseases

In our cohort of 70 patients of men who have sex with men (MSM) with mpox, more than one-third presented with proctitis. In two-thirds of proctitis patients, there was no typical rash upon presentation, and in one-fifth, there was no rash at all, making the diagnosis a challenge. A rectal swab for mpox polymerase chain reaction (PCR) can be diagnostic.

Mpox Presenting as Proctitis in Men Who Have Sex With Men