Hello,
You may be suffering from Tinea Capitis or Ringworm (fungal infection) of the scalp.
Ringworm is a fungal skin infection that occurs on the face, body or scalp. The symptoms of
Ringworm or Tinea Capitis include a dry itchy scalp, scaling, crusting, inflamed nodules, hair loss and tender enlarged lymph nodes on the neck. Because of the scratching that is involved with the condition it can become secondarily infected with a bacterial infection.