Human Head Louse Egg (Nit)

Exclusively found on the human scalp, specifically attached to hair shafts near the skin surface for warmth.

Strictly hematophagous; they feed on human blood several times a day. Nits (eggs) identify the developmental stage and do not feed.

The female louse glues eggs (nits) to the base of hair shafts. Nits hatch in about 8-9 days. They cannot fly or jump and are spread via direct head-to-head contact.

Risks include intense itching, scalp irritation, and secondary bacterial infections from scratching. They are not known to transmit diseases, but infestations cause significant social and psychological distress.