What condition is caused by an infection of head lice?

The condition caused by an infestation of head lice is known as Pediculosis capitis. This term specifically refers to the infestation characterized by the presence of lice on the scalp, which can lead to itching and discomfort as the lice feed on blood from the scalp. Since head lice are parasitic insects, the primary issue they cause is the irritation and itchiness from bites. Pediculosis capitis is particularly common among children and can spread easily through close contact and sharing personal items.

In contrast, dermatitis refers to inflammation of the skin caused by various factors such as allergens, irritants, or other conditions. Scabies is a separate condition caused by a mite infestation, leading to intense itching and a rash. Psoriasis is a chronic autoimmune condition that leads to the rapid build-up of skin cells, forming scales and red patches, which are not related to lice infestations. Thus, Pediculosis capitis is the only option directly associated with an infection caused by head lice.