S.C.
Not to be offensive, but how long has this been going on? Have you ruled out lice? My sister works for hair fairies (they remove lice) and itching of the head is the big sign. However, if it has been going on for a long time, then that wouldn't be it. I just made an appointment with a pediatric dermatologist for my daughter, because her hair is not growing normally because she has a flaky scalp due to exzema and so I want to know what to do for her. When I find out at her appointment I could share with you what I find out. Currently, we make sure not to use any shampoos with fragrance. You could try california baby or aveeno, if he does not have the flakiness then you wouldn't want to try it, but we tried head and shoulders (her ped recommended). Good Luck!
S.
Mom to four beautiful daughters ages 8,6,4 and 2 months.