The term collodion baby applies to newborns who appear to have an extra layer of skin (known as a collodion membrane) that has a collodion-like quality. it is a descriptive term, not a specific diagnosis or disorder (as such, it is a syndrome). affected babies are born in a collodion membrane, a shiny waxy outer layer to the skin. this is shed 10-14 days after birth, revealing the main symptom of the disease, extensive scaling of the skin caused by hyperkeratosis. with increasing age, the scaling tends to be concentrated around joints in areas such as the groin, the armpits, the inside of the elbow and the neck. the scales often tile the skin and may resemble fish scales. [https://orcid.org/0009-0006-4530-3154]

Lamellar ichthyosis, also known as ichthyosis lamellaris and nonbullous congenital ichthyosis, is a rare inherited skin disorder, affecting around 1 in 600,000 people..