Let’s assume that we have a parent with normal skin and a parent with epidermolytic ichthyosis (formerly known as epidermolytic hyperkeratosis, or EHK).
Normal skin turnover Skin has dermis and epidermis layers. Epidermis has four layers- stratum basale, spinosum, granulosum, and corneum from base to top.
It has been described as an incidental finding in normal skin, skin adjacent to epidermal tumor (both benign and malignant) and normal oral mucosa. 29.