phthiriasis
Could not find phthiriasim in Logeion dictionaries.
phthiriasim Noun: feminine accusative singular of phthiriasis
phthīrĭăsis, is, f., = φθειρίασις,
- the lousy disease, phthiriasis, Plin. 26, 13, 86, § 138; 20, 6, 23, § 53; 25, 5, 25, § 61 al.
phthīriasis, is, Akk. im, Abl. ī, f. (φθειρίασις), die Läusesucht, Plin. 20, 53 u.a. Aur. Vict. de vir. ill. 75, 12.
phthīrĭāsis, is, f. (φθειρίασις), phthiriase [maladie pédiculaire] : Plin. 20, 53.