The Best Hair Lice Infestation References. Web a health care provider may diagnose head lice after finding a live young or adult louse in the person's hair or on the scalp, or after seeing one or more nits on hair shafts found within 1/4 inch (6 millimeters) of the scalp. Before using permethrin, wash your child's hair with shampoo but not conditioner.
Web follow these treatment steps: Dogs, cats, and other pets do not play a role in the transmission of human lice. If wet combing has not worked or is not suitable, you could try a medicated lotion or spray.
