What are symptoms of head lice in a child?

Itching, or none. Many children have no symptoms whatsoever, despite a good-sized infestation. Other children may have itching or a rash around the scalp. The diagnosis is made by finding live lice and/or nits in the hair. To check for lice, use a very fine-toothed comb to comb through wet hair section by section, looking for nits and adult lice.