Head Lice – Definition
Head lice are tiny, barely visible insect-like animals (“arthropods”) that may live on the head and cause itching. (“Lice” is plural; the singular is “louse.”) Head lice may also live in the eyebrows, eyelashes, and beard. But sometimes infestations in these areas are from a related species called pubic lice.
Head Lice – Causes
Head lice spread by personal contact and by sharing combs, brushes, hats, and other personal items.