Hyperkeratosis

The liver is the primary storage organ for vitamin A; liver damage impairs storage and release, depleting circulating vitamin A. Hyperkeratosis (keratosis pilaris) presents as small red or rough bumps on hair follicles and indicates fat-soluble vitamin deficiencies caused by liver damage. Deficiency in either vitamin A or vitamin E leads to keratin buildup at hair follicles, as both are essential for skin cell turnover and follicular integrity.