What Causes Head Lice?
Reviewed: Dr. Gromatzky
9. Complications
Head lice will thankfully not cause severe problems, although they can be very irritating and can cause a lack of sleep in some cases. They are not known to carry diseases that can be transmitted through their bite; however, some species of lice can carry serious diseases in their feces.
One problem that can arise is skin infections. These tend to happen because the patient scratches the skin, and this can cause their nails to break open the skin, allowing pathogens a way to enter. This is how diseases from lice feces are transmitted to humans. Thankfully, most infections should usually be relatively easy to treat if they do arise.
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