What is the term for an infestation of lice?

The term "pediculosis" specifically refers to an infestation of lice. Lice are parasitic insects that can infest various parts of the body, including the scalp, body, and pubic area. Pediculosis is used in a medical context to describe the presence of lice and the condition that results from their infestation.

The other terms do not accurately describe an infestation of lice. Scabies refers to a skin condition caused by mite infestation, dermatitis describes inflammation of the skin that can have various causes, and the term infestation is a general term that can apply to various parasites and does not specifically denote lice. Thus, pediculosis is the precise term that captures the nature of a lice infestation.