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Head lice infestation, also known as pediculosis capitis, is the infection of the head hair and scalp by the head louse (Pediculus humanus capitis). [6] Itching from lice bites is common. [ 5 ] During a person's first infection, the itch may not develop for up to six weeks. [ 5 ]
Head-lice infestation is most frequent on children aged 3–10 and their families. The CDC estimates that 6 to 12 million children aged 3 to 11 get lice every year. [6] Females aged 3–12 years are most commonly infested. [7] Those of African descent rarely experience infestation due to differences in hair texture. [7]
Head lice are most common among young children — 6 million to 12 million lice outbreaks occur yearly in children between 3 and 11 in the US — though adults are vulnerable to head lice as well ...
This condition occurs most often in children. Other symptoms to note: In addition to the signature slapped cheek look of Fifth Disease, other symptoms include nausea, sore throat, headache, and a ...
Normally, head lice infest a new host only by close contact between individuals, making social contacts among children and parent-child interactions more likely routes of infestation than shared combs, hats, brushes, towels, clothing, beds, or closets.
According to the CDC, many nits are more than 1/4 of an inch from the scalp, meaning they are either very unlikely to hatch live, crawling lice, or wind up being an egg casing with no insect inside.
They can cause localized skin irritations and are vectors of several blood-borne diseases. Children appear particularly susceptible to attracting lice, possibly due to their fine hair. At least three species or subspecies of Anoplura are parasites of humans; the human condition of being infested with sucking lice is called pediculosis.
Main article: Human parasite Endoparasites Protozoan organisms Common name of organism or disease Latin name (sorted) Body parts affected Diagnostic specimen Prevalence Source/Transmission (Reservoir/Vector) Granulomatous amoebic encephalitis and Acanthamoeba keratitis (eye infection) Acanthamoeba spp. eye, brain, skin culture worldwide contact lenses cleaned with contaminated tap water ...