Check the scalp and hairline (especially behind the ears and at the nape of the neck)
Use a bright light and a fine-toothed lice comb
Apply conditioner or wet hair to help the comb move through the hair
Comb from the scalp to the ends in small sections, wiping the comb on a white tissue after each pass
Look for live lice (small, moving insects) during combing
Look for nits (oval eggs) attached firmly to hair shafts close to the scalp
Separate hair and inspect individual strands for nits, focusing on the nape and behind ears
Use good magnification if available (such as a handheld magnifier)
Check all household members and close contacts
Inspect hats, helmets, bedding, and frequently shared items for possible contamination
Repeat combing and checks as directed after treatment (typically daily for about 2 weeks)