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Published on: 7/22/2025

What does a Lyme disease rash look like?

The Lyme disease rash, often called erythema migrans, usually looks like a red, circular patch that can expand and sometimes resembles a bull's-eye.

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Explanation

Lyme disease is often recognized by a distinctive rash called erythema migrans. This rash typically appears as a red, circular patch that can expand over time. In some cases, it may look like a bull's-eye, with a red outer ring surrounding a clear area and a red center.

Characteristics of the Rash:

  • Shape and Size: The rash is usually round or oval and can grow to several inches across.
  • Color: It starts as a red spot and may develop a central clearing, giving it a bull's-eye appearance.
  • Location: It often appears at the site of the tick bite but can show up on other parts of the body.
  • Symptoms: It may be warm to the touch but is usually not painful or itchy.

This rash is an early sign of Lyme disease, appearing within 3 to 30 days after a tick bite. It's important to note that not everyone with Lyme disease develops this rash, so other symptoms like fever, chills, and body aches should also be considered. If you suspect Lyme disease, it is important to seek medical advice.

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