Commonly referred to as a cold sore, the technical term for a contagious skin disorder characterized as an eruption of a vesicle situated on an inflamed base:

Commonly referred to as a cold sore, the technical term for a contagious skin disorder characterized as an eruption of a vesicle situated on an inflamed base:

• A. Herpes simplex
• B. Miliaria rubra
• C. Impetigo
• D. Rosacea

Answer: (A)

A contagious viral infection caused by herpes simplex virus, typically presenting as a cluster of vesicles on an inflamed, reddened base around the lips or mouth. The fluid-filled blisters can itch or burn, may rupture and crust, and the infection spreads through close contact when lesions are active. This description fits herpes simplex, which distinguishes it from miliaria rubra (heat rash with red, itchy bumps), impetigo (bacterial infection with honey-colored crusts), and rosacea (chronic facial redness with visible vessels rather than vesicular eruptions).

A contagious viral infection caused by herpes simplex virus, typically presenting as a cluster of vesicles on an inflamed, reddened base around the lips or mouth. The fluid-filled blisters can itch or burn, may rupture and crust, and the infection spreads through close contact when lesions are active. This description fits herpes simplex, which distinguishes it from miliaria rubra (heat rash with red, itchy bumps), impetigo (bacterial infection with honey-colored crusts), and rosacea (chronic facial redness with visible vessels rather than vesicular eruptions).