Chancroid or chancroidal ulcers.

Area of Science:

• Dermatology
• Infectious Diseases
• Public Health

Background:

• Genital ulcers are a common presentation of sexually transmitted infections.
• Chancroid, caused by Haemophilus ducreyi, is characterized by painful ulcers and lymphadenopathy.
• Accurate diagnosis is essential for effective treatment and control of sexually transmitted infections.

Purpose of the Study:

• To investigate the clinical features of genital ulcers, including chancroid and a distinct type termed chancroidal ulcers.
• To differentiate chancroid and chancroidal ulcers based on clinical presentation.
• To highlight the challenges in laboratory diagnosis of Haemophilus ducreyi.

Main Methods:

• Retrospective analysis of 1532 cases presenting with genital ulcers.
• Clinical examination to categorize ulcer morphology, incubation period, and presence of lymphadenopathy.
• Review of demographic and socio-economic factors of affected individuals.

Main Results:

• Out of 1532 cases, 610 had features suggestive of chancroid, with 312 showing classic multiple lesions.
• A distinct group of 162 cases presented with single, well-defined, soft, tender ulcers (chancroidal ulcers) with a longer incubation period (8-11 days) and no lymphadenopathy.
• Chancroidal ulcers predominantly affected males (27:1 ratio), individuals of low socio-economic status, and occurred on the prepuce, coronal sulcus, and glans penis in males, and labia minora in females.

Conclusions:

• Clinical differentiation between chancroid and chancroidal ulcers is necessary due to limitations in diagnosing Haemophilus ducreyi via gram-stained smears and culture.
• Chancroidal ulcers represent a distinct clinical entity with unique characteristics.
• Public health strategies should consider the clinical presentation for managing genital ulcer disease in vulnerable populations.