MONDO_0012089 (ichthyosis prematurity syndrome) is a rare, syndromic congenital ichthyosis characterized by premature birth (at gestational weeks 30-32, in general) in addition to thick, caseous and desquamating epidermis, neonatal respiratory asphyxia, and persistent eosinophilia. After the perinatal period, a spontaneous improvement in the health of affected patients is observed and skin features (vernix caseosa-like scale) evolve into a mild presentation of flat follicular hyperkeratosis with atopy. Also known as: IPS, congenital ichthyosis type 4, idiopathic pneumonia syndrome.