This is Ichthyosis vulgaris. It's an inherited skin disorder in which dead skin cells accumulate in thick, dry scales on your skin's surface.
The scales of ichthyosis vulgaris, sometimes called fish scale disease or fish skin disease. Sometimes, mild cases of ichthyosis vulgaris go undiagnosed because they're mistaken for extremely dry skin.
This can b controlled and treated but if left unattended can get worse with time.
Consult a Dermatologist for the same.
Health Tips
avoid OTC products and use a Medicated moisturizer