Ectoparasitic infections are infections that are caused by tiny
parasitic bugs, such as lice or mites. They are transmitted by close
physical contact, including sexual contact. The parasites affect the
skin or hair and cause itching.
Pubic lice (pediculosis pubis)
Pediculosis pubis is an infection of the genital area caused by the
crab louse (Phthirus pubis). The lice (commonly called crabs) are small
bugs that are visible to the naked eye without the aid of a magnifying
glass or microscope. The lice live on pubic hair (or any other hair) and
are associated with itching.