head louse

The head louse, scientifically known as Pediculus humanus capitis, is a common species of sucking louse that lives on the human scalp. These small, wingless parasitic insects are found worldwide and feed on blood. Head lice attach themselves to hair using their legs' claws. They are distinct from body lice, which are larger and live in clothing seams.12

Head lice spread through direct contact between people. Maintaining clean hair and scalp and using a fine-tooth comb are effective ways to manage infestations. In the past, shaving heads and wearing wigs were common methods to combat them. Heavy infestations can cause intense itching, and scratching may lead to secondary skin infections. Due to widespread use of insecticidal shampoos, head lice have developed resistance to many insecticides, leading to a resurgence in some areas.23