Ringworm is a common fungal infection. It's not caused by worms. You can usually buy medicine from a pharmacy to treat it.
The main symptom of ringworm is a rash. It may look red, silver or darker than surrounding skin, depending on your skin tone.
The rash may be scaly, dry, swollen or itchy.
Ringworm can appear anywhere on the body, including the scalp (tinea capitis) and groin (jock itch).