Parasitic insects that live on the body.
Where?:Almost everywhere in the UK.
Lice puncture the skin, then suck blood. While these bites may itch, it is usually the presence of lice eggs glued to hairs that leads to a diagnosis.
A high level of personal hygiene and clean clothes.
Although there are no recorded incidents in the UK, body lice can transmit bacterial infections and Rickettsial diseases that attack blood and lymph vessels.
Danger rating:4/10