08.10 ID
08.14 ID [PDF link] – Genitourinary infections / sexually transmitted infections (STI / STD): Chlamydia trachomatis (Lymphogranuloma venereum), Gonorrhoea (Neisseria gonorrhoeae), Bacterial vaginosis (Gardnerella vaginalis, Amsel's criteria), Trichomonas vaginalis, Genital warts (Human papilloma virus, HPV), Genital herpes (HSV), Pubic lice (Crabs), Donovanosis (Granuloma inguinale), Syphilis (Treponema pallidum), Chancroid (Haemophilus ducreyi), Ulcers in STI
More on syphilis
In addition to the buccal snail track ulcers (just google it), there are apparently ‘mowed meadow’ lesions you can get on the tongue in secondary syphilis!
Angel JP. Plaques en Prairie Fauchée Tongue Lesions in Secondary Syphilis. N Engl J Med 2025;392. https://doi.org/10.1056/NEJMicm2411077.
More on pubic lice / crabs 🦀
Crabs specifically refers to pediculosis pubis, affecting the pubic and perianal areas. However, can also affect axillae and areas covered with chest hair.
Pediculosis ciliaris affects the eye lashes, and may be a/w conjunctivitis. May spread to eyebrows.
Ix: Examination of affected areas – look for lice or nits (louse eggs) with microscope or dermatoscope if needed
Mx: topical permethrin 1% cream – apply once, then one more time 7 days later
2nd line options include malathion lotion or oral ivermectin
Treatment of pediculosis ciliaris requires manual removal ± use of petroleum ointment (2-4x/day for 10 days), alternatively oral ivermectin.
Sexual partners should also be checked and treated. Bedding/clothing should be washed in hot water and dried hot if possible.
