Pityriasis rosea and ringworm (tinea corporis) are both skin conditions that cause round, discolored patches. Ringworm is contagious through skin-to-skin contact, while pityriasis rosea is not. Both ...

Having a circular rash can spark fears that you’ve picked up ringworm. After all, the fungal infection is notorious for causing a ring-shaped rash. But there are a lot of other circular rashes that ...