Human Lice (Head, Body, or Pubic)

Host-specific; human hair, scalp, clothing, or pubic regions

Obligate ectoparasites that feed exclusively on human blood

Wingless insects that crawl but cannot fly or jump; they lay eggs (nits) firmly attached to hair shafts or clothing fibers

Can cause intense itching and skin irritation from allergic reactions to saliva; body lice can transmit diseases like typhus and trench fever