Why are lice only on the scalp?

Lice can occur not only on the head but also on other parts of the body. There are many types of lice such as: Head louse, Crab louse, Sucking louse, Menoponidae, Mammal chewing lice, Mallophaga, Polyplax spinulosa etc.
Head lice or Pediculus humans capitis is the most common lice. What happens in people’s heads. Head lice or head lice are usually found in people who have poor hygienic conditions and who live in overcrowded places. They propagate from one head to another and make their home there. Those who do not bathe regularly, do not clean their hair properly and create an unhealthy environment for their hair cause head lice to multiply.