Nits and headlice was always thought to be something that only people with non-hygienic tendencies would suffer, but in fact nits and lice like clean hair because they can move around the scalp ...

“Head lice can be seen in the form of eggs, aka nits ... bald spots, or in severe cases, experience complete hair loss. One of the earliest signs of alopecia areata is itching of the scalp.

"The idea of growing hair on a bald scalp is only of moderate interest," Sinclair said in a telephone interview. "If we find the cure for baldness we're not going to stop studying hair." ...

It tends to lead to round or oval bald patches on the scalp, but it can affect any part of the body. When it involves the beard, doctors call it alopecia barbae. Fungi cause ringworm, which is a ...