Some ring-shaped rashes can be caused by fungal infections, insect bites, skin irritation, or viral conditions. A spreading rash after time outdoors may also need prompt medical evaluation to rule out a tick-related illness.
Taking a photo and lightly marking the edge of the rash can help show whether it is growing. Contact a pediatrician if the rash keeps expanding, lasts several days, becomes painful, or is joined by fever, tiredness, body aches, or other symptoms.
Seek urgent care for trouble breathing, swelling of the face or throat, severe pain, a high fever, unusual sleepiness, confusion, or a rapidly spreading dark rash. When unsure, it is always safest to call a healthcare professional for guidance.
