Have Pediatric Questions? Ask a Pediatrician.
My name isXXXXX and I am a physician who practices in New york. From your description, it sounds that your son has Alopecia Areata. There is no treatment indicated as the hair grows back. If your son has itchiness as well, then another diagnoses would be considered and treatment would then be indicated. But since this is his only symptoms, no treatment is indicated.
Best of luck,