What is the term for the infestation of hair and scalp with head lice?

The correct term for the infestation of hair and scalp with head lice is "pediculosis capitis." This condition specifically refers to the presence of lice, which are tiny parasitic insects that live on the human scalp and feed on blood. The term "pediculosis" denotes an infestation by lice of any kind, while “capitis” indicates that the infestation is occurring on the head.

Understanding this term is important for barbers and cosmetologists as they may encounter clients with this issue and need to know how to handle the situation appropriately. It also highlights the importance of maintaining hygiene and awareness in both personal and professional environments.

The other terms presented refer to different conditions: scabies is caused by mites, plica polonica is a condition involving matted hair, and dermatitis refers to an inflammation of the skin. Therefore, when discussing head lice specifically, "pediculosis capitis" is the accurate and relevant terminology.