Head lice are tiny, wingless insects that feed on human blood. They are spread through head-to-head contact, or by sharing combs, brushes, or other personal items. Head lice can be a nuisance, but they are not dangerous. However, they can cause itching and irritation, and can lead to skin infections if scratched excessively.
Checking for head lice is important for preventing and treating infestations. There are a few different ways to check for head lice, including: