(Pubic Lice; Pediculosis Pubis)
Crabs, or pubic lice, are tiny, barely visible parasites. They are usually found in the pubic hair but can also be found in other body areas with short hair. This may include eyelashes, eyebrows, armpits, and mustache.
Pubic lice are commonly called crabs because they look like tiny crabs.
(Roundworm)
Pinworms are very common parasites that live in the intestine.
Pinworms are most active at night, 2 to 3 hours after bedtime. The female worm comes out through the anus, and deposits eggs in the perineal area. The perineal area is between the thighs and runs from the anus to the genitals.
Giardiasis is a gastrointestinal infection. It is one of the most common parasitic diseases in the world. It may be responsible for for up to a billion cases annually worldwide.
Scabies is an infestation of the skin. It is caused by a tiny mite.
An infestation results when the female mite burrows into the skin and lays its eggs. The scabies mite does not suck blood. It does not transmit any disease other than scabies between people.
Head lice are tiny, barely visible insect-like animals (“arthropods”) that may live on the head and cause itching. (“Lice” is plural; the singular is “louse.”) Head lice may also live in the eyebrows, eyelashes, and beard. But sometimes infestations in these areas are from a related species called pubic lice.
Head lice spread by personal contact and by sharing combs, brushes, hats, and other personal items.