Definition

Noun: A small, painful, fluid-filled blister or cluster of blisters that typically appears on or around the lips or mouth, caused by an infection with the herpes simplex virus type 1 (HSV-1). It is a common symptom of a herpes simplex virus outbreak.

Usage

A "fever blister" is a specific type of lesion. It is used as a countable noun. * It is often triggered by factors like stress, fatigue, sunlight, or fever (hence the name). * It is highly contagious, especially when the blister is weeping or open. * The term is commonly used in everyday, informal language. In medical contexts, it is more formally called a "cold sore" or "herpes labialis."

Examples

• "I feel a fever blister forming on my lip."
• "She gets a fever blister whenever she's under a lot of stress."
• "Avoid sharing utensils if you have a fever blister to prevent spreading the virus."

Advanced Usage

• The phrase is sometimes used metaphorically to describe a small, urgent, and irritating problem.
  • Example: "The scheduling conflict was a fever blister on an otherwise perfect plan."

Variants and Related Words

• Cold sore (noun): The most common synonym for "fever blister."
• Herpes labialis (noun): The formal medical term.
• Oral herpes (noun): A general term for herpes infections in the mouth area.

Synonyms

• Cold sore
• Herpes simplex lesion

Related Phrases

• To have a fever blister breakout: To experience the appearance of one or more fever blisters.
  • Example: "I always have a fever blister breakout after a bad cold."
• A fever blister is coming on: Used to describe the initial tingling or itching sensation that precedes the visible blister.
  • Example: "I can feel a fever blister coming on; I need to apply cream right away."

Noun

1. caused by herpes simplex virus type 1 (HSV-1)