On today's show we are going to look at some common ectoparasites--lice.

According to the CDC, lice are parasitic insects that can be found on people's heads, and bodies, including the pubic area. Human lice survive by feeding on human blood. Lice found on each area of the body are different from each other. The three types of lice that live on humans are head, body and public louse.

Head and body lice will be today's topic and parasitology expert and author of Parasites, Tales of Humanity's Most Unwelcome Guests, Rosemary Drisdelle is here discuss it with me.