1.Itchy Scalp One of the first signs of a louse infestation is a regular or constant itch. The source of itching is the allergic response to the lice bites, which suck blood from the scalp which triggers an itch reaction to their saliva and feces. But itching can take a while to start because your child might not be very allergic. 2.’Creeps’ in Scalp We’ve all had a bug in