Hair nits are small, oval-shaped eggs laid by head lice. They are often found attached to the hair shaft, close to the scalp. Head lice are tiny, wingless insects that feed on human blood.
Hair nits are important to identify and treat because they can lead to an infestation of head lice. Head lice can cause itching, scratching, and irritation. They can also spread diseases such as typhus and trench fever.