Circular rash: Causes and diagnosis

The most common cause of a circular rash is ringworm, but allergic reactions, Lyme disease, and other factors can also cause this issue. Learn more here.

Ringworm - HSE.ie

Lyme disease - NHS

Ringworm (Tinea Corporis) Condition, Treatments and Pictures for Children - Skinsight

Lyme Disease UK - Lyme Disease and the EM Rash

Rashes Lyme Disease Action

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13 Pictures of Common Skin Rashes

Circle rashes on the skin but not ringworm: Other causes