Head lice are tiny insects that can live on your scalp. They’re highly contagious and can cause itching and bumps on your scalp. Scratching may also result in bleeding. If you have lice ...

6. Head lice Lice are tiny insects that live on your scalp, lay eggs there, and bite your skin, causing symptoms like: Itchy scalp, especially at night when lice are most active. A subtle ...