When your scalp is itchy and white flakes are visible in your hair, you may wonder whether you have lice or dandruff. Their symptoms can overlap, making it hard to tell them apart. Head lice are ...

Although the nits can be confused with dandruff, when you see adult lice moving around your head, that’s unmistakable. “You can use physical methods to remove the lice,” Dr. Klein says ...

Head lice move rapidly, traveling up to 23 cm/min ... within 1–2 mm of the scalp. The nit is attached with a highly insoluble cement. The end of the nit is topped with a tough but porous ...