A 21-year-old woman comes to the university health clinic ...

A 5-year-old boy is brought to the clinic by his mother because of the new onset of a flaky scalp and patches of hair loss. He just started preschool 2 months ago and his teacher noted the alopecia during a nap break. His past medical and birth history are insignificant, and he is not on any medications at this time. He has 1 cat and 1 dog at home. ................
................