[1722] pityriasis, is, Akk. in, f. (πιτυρίασις), der Kleiengrind, Cass. Fel. 6. p. 13, 10 u. 15 R.
Brockhaus-1911: Pityriasis
Meyers-1905: Pityriasis
Pierer-1857: Pityriăsis