The eggs in your child’s hair are actually head lice eggs, also known as head lice disease, caused by head lice. Head lice parasitize the hair-covered parts of the scalp, and the eggs are very small, flat, round, white and smooth, clinging to the hair and not easy to comb off. The eggs stick to the hair, and the larvae hatch after 5-6 days and can lay eggs again after 3 weeks. Dark gray lice and white eggs are visible in the hair. Head lice mouthparts puncture a person’s skin and saliva is injected into the body, which tends to cause itching and inflammation of the skin. Red macules appear, often with scratches, skin peeling, bleeding, scabbing and even pus. Hair can become stuck to the pulp and ooze, giving off an unpleasant odor. In addition to direct contact, the infection can also be contracted indirectly by sharing combs and hats. Therefore, patients who are already infected should use combs separately from other people, and towels, pillowcases, and underwear used to wash children’s hair should be scalded with hot water and exposed to sunlight. Head lice infections should be treated promptly by a doctor.