Chancroid Treatment in Nepal — H. ducreyi Ulcer The Painful Genital Ulcer — Diagnosis, Treatment & the Differentials

Chancroid — the Painful Ulcer Differential

Chancroid is genital ulcer caused by Haemophilus ducreyi — producing a painful, soft, ragged-edged ulcer (or several) with tender inguinal lymphadenopathy (the "bubo" — swollen painful groin nodes that may suppurate). It is ulcer that hurts — distinguishing it clinically from painless syphilis chancre and usually-vesicular herpes.

Diagnosis is largely clinical — painful ulcer with suppurative nodes in right epidemiological context — because culture is technically difficult and rarely available; diagnosis is made by pattern and by excluding differentials (syphilis ruled out serologically, herpes by lesion PCR where appearance is uncertain).

Treatment is azithromycin or ceftriaxone-based — curable — with painful ulcer resolving over days to weeks; partner management and the HIV-risk context (genital ulcers substantially multiply HIV acquisition risk) are part of complete care.

What Chancroid Looks Like

The characteristic lesion: a painful genital ulcer — soft, ragged-edged, with a purulent base — often multiple, appearing days after exposure. The tender inguinal lymphadenopathy ( bubo — swollen, painful, sometimes suppurating) accompanies in a large fraction.

The distinguishing is pain: chancroid hurts — ulcer is painful, nodes are tender — contrasting with painless syphilis chancre and usually-vesicular painful-but-different herpes lesion. The clinical picture separates them where they coexist in differential.

How It Is Diagnosed

Diagnosis is clinical — painful ulcer with characteristic appearance and tender nodes — because H. ducreyi culture is technically demanding and not routinely available. The diagnosis is made by pattern plus exclusion: syphilis ruled out serologically, herpes excluded by lesion PCR where appearance is uncertain.

The differential — syphilis (painless chancre), herpes (usually multiple painful vesicles), LGV (a different pattern with more prominent lymphadenopathy), and non-infective ulcers — is sorted at visit, with tests run to confirm or exclude each.

Treatment

Chancroid is curable — azithromycin (single dose) or ceftriaxone (single dose) are standard regimens — with painful ulcer resolving over days to weeks and bubo following more slowly. Large suppurative nodes may need drainage where they persist.

The complete care includes: partner management (partners examined and treated — ulcer is highly transmissible while present), the HIV context (genital ulcers multiply HIV acquisition risk substantially — a chancroid diagnosis prompts HIV testing), and broader STI screen because exposure may have carried more.

The HIV Context

Genital ulcers — chancroid, syphilis chancre, herpes — are HIV-transmission multipliers: open lesion is a direct entry point, and local inflammation recruits immune cells HIV targets. A chancroid diagnosis is a prompt for HIV testing, not an optional extra.

In HIV-positive patients, chancroid can be more severe and slower to heal — immune context modifies course — and the HIV status shapes management and partner counselling.

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