Ringworm of the scalp is a type of fungal infection. The majority of UK cases are due to another type of fungus, namely, Tricophyton tonsurans. The medical term for ringworm of the scalp is Tinea capitis, or Dermatophytosis capitis. Most mammals have a skin fungus with which they live in peaceful coexistence, without any symptoms for the animal, but the fungus can be transferred to humans. Ringworm is most common amongst farming populations whose lifestyle involves frequent and open contact with animals.
Children are particularly at risk and between children the infection can be highly contagious.
One or more sections of the scalp will show hair loss or give a stubbly appearance. The skin will be slightly scaly but with little or no irritation. In addition to these symptoms, ringworm may be present on the face or other parts of the body. Alternatively, a three to four inch-wide lesion will appear which may develop into a large rash. The kerion may become inflamed and fill with fluid or pus, and may also be quite painful.