Lice are parasitic insects that live on people’s head and feed from their blood. Lice are highly contagious and can be transmitted by close contact with others or by sharing personal effects (hats, towels, hair brushes). It is more common in children between 3-11 years old and their families. Personal hygiene has no relation to the appearance of lice.
The adult lice is about the size of a sesame seed and is dark brown in color. The female lives for 3-4 weeks and lays about 6 eggs (nits) per day. Nits are even smaller, similar to a flake of dandruff and are very attached to the hair. At 7 days the nits born from the eggs have the appearance of a small adult. Lice and nits are easier to detect in the neck and behind the ears.