Fungal Infections: One of the Most Common Causes
One of the most frequent reasons for circular red patches is a superficial fungal infection, often called ringworm (despite having nothing to do with worms). These infections thrive in warm, moist areas of the body, such as the groin, buttocks, thighs, and under skin folds.
Typical signs include:
- Red or pink circular patches
- Slightly raised or scaly borders
- Clearer skin in the center
- Mild itching or irritation
- Fungal rashes often spread slowly and may worsen if treated incorrectly with steroid creams instead of antifungal products.
When It’s Not a Fungus
Not all circular rashes are fungal. Doctors point out several other possibilities:
Eczema (nummular eczema)
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