Disease:

Organism:

Diagnosis:

Lymphadenopathy:

Treatment:

Summary:

chancroid

Haemophilus ducreyi

gram (-) rod; “school of fish” on touch prep or culture on Nairobi Media

unilateral, painful, suppurative (fluctuant)

erythromycin, IM ceftriaxone

painful “kissing lesions”

LGV

Chlamydia trachomatis

complement fixation

painful, suppurative (fluctuant)

doxycycline

painless (unnoticed) erosion, painful LAN

granuloma inguinale

Calymmatobacterium granulomatis

touch prep (Donovan bodies);  cannot culture

no LAN,  +/- pseudobuboes

painless beefy red granulation tissue, no LAN

syphilis

Treponema pallidum

RPR; VDRL; FTA-abs

bilateral, painless, nonsuppurative

penicillin

clean, painless, punched out, with rolled edges

HSV

Herpes simplex virus

culture

painful LAN

grouped painful vesicles or erosions