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Head lice cases are rising among U.S. schoolchildren, primarily ages 3 to 11, due to close contact, not hygiene.
Head lice infestations are rising as children return to school, with up to 12 million cases annually in the U.S., mostly affecting children aged 3 to 11.
Lice spread through close contact, not poor hygiene, and cause itching but are not linked to disease.
Eggs, or nits, appear as small specks on hair and can resemble dandruff.
Treatment includes over-the-counter or prescription medications, FDA-cleared devices using heat or airflow, and professional removal services.
Experts stress that no treatment kills all lice and eggs at once, requiring follow-up.
Schools typically do not exclude children with lice, and home cleaning is unnecessary.
Regular hair checks and avoiding shared personal items help prevent spread.
Los casos de piojos en la cabeza están aumentando entre los escolares estadounidenses, principalmente de 3 a 11 años de edad, debido al contacto cercano, no a la higiene.