_1. They feed on blood, and the females lay their eggs on the hair close to the scalp
_2. It is an autoimmune disease, which means your immune system attacks your own body
mistake
_3. it is form of seborrheic dermatitis affects typically in the first 6 months. it cause greasy, yellowish scales or crust on scalp.
_4. it is most common in children between the ages of 3 and 7, but it can affect adults too.
_5. A skin condition that cab show up anywhere but often happens in the scalp.​