Body lice infestations can be found on people living in crowded, unsanitary conditions where clothing is infrequently changed or laundered. Usually, the first sign of lice is itching. Nits are very small round eggs that stick to hair an inch or so from the scalp. Itching around the genital area should lead to an examination for pubic lice or their eggs. Pubic lice look like very little crabs.
Scratching is very strong, it can result in bacterial infection.
It may take as long as two to three weeks or longer for a person to notice the intense itching associated with lice. Pediculosis can be spread as long as lice or eggs remain alive on the person, clothing or furniture. Follow package directions. Nit removal with a fine tooth comb is recommended. It is time consuming but helps to insure adequate treatment.