Head louse (nit)

The human scalp and hair shafts, particularly behind the ears and near the neckline.

Exclusively human blood, consumed several times a day.

Nits are eggs glued firmly to hair shafts. They cannot jump or fly; transmission occurs via direct head-to-head contact.

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