Head Louse

Primarily the human scalp, particularly behind the ears and near the neckline.

Obligate ectoparasites that feed exclusively on human blood several times a day.

They are wingless and cannot jump; they spread via direct head-to-head contact. They attach their eggs (nits) to hair shafts near the scalp.

Can cause intense itching and scalp irritation. They are not known to spread disease, but secondary skin infections can occur from scratching.