Lice were collected from 47 years old male worker on his complaint for itching and red rashes on body. The lice thus collected were subjected to microscopic examinations and identified as Phthirus pubis, commonly known as the crab louse, an ecto-parasite which is only found on humans and requires human blood to survive. The infested parts of the body of worker was treated with 1% Permethrin cream, that was applied for 10 minutes and then rinse off with water. Second treatment was done on day and after 14 days no viable lice and nits were seen on the body of the victim.