According to the Mayo Clinic: Head lice are tiny insects that feed on blood from the human scalp. Head lice most often affect children. The insects usually spread through direct transfer from the hair of one person to the hair of another.
Having head lice isn’t a sign of poor personal hygiene or an unclean living environment. Head lice don’t carry bacterial or viral diseases.
Nonprescription and prescription medications can help treat head lice. Follow treatment instructions carefully to rid the scalp and hair of lice and their eggs.
People also use a number of home or natural remedies to get rid of head lice. But there is little to no clinical evidence that they’re effective.
Common signs and symptoms of head lice may include: