How do you look for lice?

Dr Sarah Jarvis Not all scalp itching is caused by head lice, and head lice don't always cause an itch. Many people with head lice do not have any symptoms. However, an itchy scalp occurs in some cases. [https://patient.info/health/head-lice-and-nits#nav-3](https://patient.info/health/head-lice-and-nits#nav-3)