pediculosis
noun
pe·dic·u·lo·sis pi-ˌdi-kyə-ˈlō-səs 
plural pediculoses pi-ˌdi-kyə-ˈlō-ˌsēz
: infestation with lice
Example Sentences
Recent Examples on the Web Scientifically known as pediculosis capitis, head lice aren't contracted as a result of slacking on your personal hygiene practices. 
Rebecca Dancer, Allure, 8 Nov. 2019
Rebecca Dancer, Allure, 8 Nov. 2019 Word History
Etymology
New Latin, from Latin pediculus louse, diminutive of pedis louse
First Known Use
1876, in the meaning defined above
Medical Definition
pediculosis
noun
pe·dic·u·lo·sis pi-ˌdik-yə-ˈlō-səs
plural pediculoses -ˌsēz
: infestation with lice
called also lousiness