Itching on the scalp, especially behind the ears and at the nape of the neck
A tickling or crawling feeling in the hair
Seeing live lice on the scalp or hair
Finding nits attached firmly to hair shafts near the scalp
Small red bumps or sores on the scalp, neck, or shoulders
Trouble sleeping due to scalp itching
Irritability or frequent scratching of the head
Tiny white or yellowish eggs that do not brush off easily
Dark specks in the hair or on the scalp
Other people in close contact having lice