Severe itching and rashes are indicative of a body lice infestation. These parasitic insects live on bedding and clothing, only settling on human skin to feed on blood. Understanding the characteristics of body lice may help people recognize an infestation, though an infestation is unlikely to persist among people who bathe regularly and have access to laundered clothing and bedding, according to the Centers for Disease Control and Prevention, or CDC.
Appearance
Body lice are larger than other types of lice, according to MedlinePlus. Three forms of the insect exist: the eggs, the nymph and the adult. The eggs, also called nits, are tiny yellow or white ovals, which hatch in 1 to 2 weeks.
Once hatched, the eggs become nymphs, smaller versions of the adult insects. They reach maturity in approximately 9 to 12 days, according to the CDC.
Adult body louse are full-sized insects, the approximate size of a sesame seed, with six legs and tan to grayish-white coloring.
Dwelling
Body lice attach to human hair, not to be confused with head lice, which live on the human scalp. They dwell in the seams of clothing and bedding and are common in unsanitary conditions. The CDC reports that in the United States, body lice infestations occur among the homeless transient populace and in crowded living spaces where hygiene is poor.
Evidence
Characteristics of a body lice infestation include red bumps and itchy rashes, most commonly on the waist and armpits. If the louse are allowed to fester, a person's mid section can become thick and discolored. The CDC calls this ailment "vagabond disease." In addition, sores produced by severe scratching can become infected.
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