Body louse or Head louse

Exclusively on the human body; head lice inhabit the hair of the scalp, while body lice live in the seams of clothing and move to the skin to feed.

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

They are wingless and cannot jump or fly; they spread through direct head-to-head contact or sharing of personal items. They undergo incomplete metamorphosis (egg, nymph, adult).

Risks include intense itching, skin irritation, and secondary infections from scratching. Body lice can transmit serious diseases like typhus, while head lice are not considered disease vectors but are significant social and public health nuisances.