What is a flea on the head called? - briefly
The parasite commonly mistaken for a flea on the scalp is a head louse, a species of sucking insect. Its scientific designation is Pediculus humanus capitis («head louse»).
What is a flea on the head called? - in detail
The insect that inhabits human hair is commonly referred to as head lice, scientifically named «Pediculus humanus capitis». These ectoparasites feed on blood from the scalp, causing itching and irritation. Female lice lay eggs, called nits, which adhere firmly to hair shafts and hatch within seven to ten days.
Key biological characteristics:
- Size: 2–4 mm, wingless, flattened body.
- Life cycle: egg → nymph (three molts) → adult, completed in about three weeks.
- Mobility: moves by crawling; cannot jump or fly.
Symptoms associated with infestation:
- Persistent scalp itching, especially behind ears and at the neckline.
- Visible nits or live lice on hair strands.
- Redness or small sores from scratching.
Transmission occurs through direct head-to-head contact; sharing combs, hats, or pillows can also spread parasites. Crowded environments such as schools increase risk.
Effective control measures include:
- Over‑the‑counter pediculicides containing permethrin or pyrethrin, applied according to label instructions.
- Manual removal of nits using a fine‑toothed comb, performed every 2–3 days for two weeks.
- Washing clothing, bedding, and personal items in hot water (≥ 60 °C) or sealing them in plastic bags for two weeks.
- Re‑inspection after treatment to confirm eradication.
Prevention strategies focus on minimizing head contact, avoiding sharing personal items, and conducting regular scalp examinations in high‑risk groups.