Itching on the scalp, especially behind the ears and at the nape of the neck
A tickling or crawling feeling in the hair
Small red bumps or sores on the scalp, neck, or shoulders
Seeing live lice moving in the hair
Finding nits attached firmly to hair shafts close to the scalp
Nits that do not brush off easily like dandruff
Scratching that causes scalp irritation
Trouble sleeping due to scalp itching
Checking with a bright light and fine-toothed comb
Looking closely at the roots of the hair, especially around the ears and neck