The typical chancre of syphilis appears as a :

NHM MP Staff Nurse-2022

Medical Surgical Nursing

Easy

Appeared in: NHM MP Staff Nurse-2022

Explanation

The primary lesion of syphilis, caused by the spirocheete Treponema pallidum, is known as a chancre.
This lesion classically presents as a single, indurated (firm), painless, and clean-based moist ulcer.
The chancre develops at the site of bacterial inoculation, typically 2 to 4 weeks after sexual contact.
It is often accompanied by painless regional lymph node swelling and heals on its own, which can mislead patients into thinking the infection is resolved.

Option A: This describes the typical lesions of genital herpes, which are painful, grouped vesicles or 'pimples', not a single painless ulcer.
Option B: This describes genital warts (condylomata acuminata), which are caused by the Human Papillomavirus (HPV). The primary lesion of syphilis is an ulcer, not a wart.
Option D: A primary syphilitic chancre is characteristically non-itchy. An itching, crusted area is more aligned with a parasitic infestation like scabies, pediculosis pubis, or a healing herpetic lesion.

Clinical Relevance

Nursing practice connection: Knowing Clinical presentation of primary syphilis (chancre) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Accurate identification of genital ulcers is a critical nursing skill for ensuring correct diagnosis, initiating appropriate treatment, and facilitating public health reporting to prevent the spread of STIs.
A key nursing role involves patient education. Since the chancre heals on its own, nurses must explain that this does not mean the infection is cured and stress the importance of completing the full course of antibiotic therapy to prevent progression to secondary and tertiary syphilis.
Nurses must educate patients on safe sex practices, partner notification, and the importance of follow-up testing to confirm treatment success.

How to Approach the Question

First, identify the core subject of the question: the 'typical' appearance of a syphilitic chancre.
Recognize this as a factual recall question testing your knowledge of sexually transmitted infections (STIs).
Access your memory of the classic description of a primary syphilis lesion. The two most important keywords are 'painless' and 'ulcer'.
Systematically evaluate each option against this classic description.
Option C, 'a painless moist ulcer,' directly and accurately matches the key characteristics.
Rule out the other options by associating them with their correct pathologies: 'tender pimples' points to herpes, 'elevated wart' indicates HPV, and 'itching' suggests parasites or other dermatological conditions.

Concept Tested & Keywords

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E6 Medicine Davidson Principles Practice 24e p. 357-359

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed pp. 383-385, 374-376