Scalp

scalp the integument covering the top of the head. It consists of three layers of tissue: the skin, an underlying layer of tissue and blood vessels, and the occipitofrontalis muscle stretching from the eyebrows to the back of the head. Except for its abundant growth of hair, the skin of the scalp resembles that of the rest of the body but is especially rich in blood vessels. Hence profuse bleeding may be associated with scalp injuries.

Louse

Louse are tiny insects that live on the skin covering the top of your head, called the scalp. Louse can be spread by close contact with other people. Head Louse infect hair on the head. Tiny eggs on the hair look like flakes of dandruff. However, instead of flaking off the scalp, they stay put. Louse can live up to 30 days on a human. Their eggs can live for more than 2 weeks. Louse spread easily, particularly among school children. Head lice are more common in close, overcrowded living conditions. You can get head lice if you:
1. Come in close contact with a person who has lice
2. Touch the clothing or bedding of someone who has lice
3. Share hats, towels, brushes, or combs of someone who has had lice.