Do scabies lay eggs in hair?
Isabella Bartlett
Updated on January 07, 2026
The head louse begins as an egg laid near the scalp and “glued” firmly to a hair shaft. After three to four days, the embryo's central nervous system is fully developed. It hatches as a nymph in seven to 10 days. Nine to 12 days after hatching, the nymph develops into a sexually mature male or female.
head louse
The head louse (Pediculus humanus capitis) is an obligate ectoparasite of humans. Head lice are wingless insects that spend their entire lives on the human scalp and feeding exclusively on human blood.
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