Ichthyosis, keratosis follicularis spinulosa decalvans is an extremely rare genetic condition in which dead skin cells accumulate in thick, dry scales on your skin's surface. This may occur anywhere on the body that hair is present. The skin around hair follicles becomes stiff and scars, resulting in hair loss. Exposure to sunlight may improve or worsen the condition. In some cases, excess dead skin sheds much better from wet tanned skin after bathing or a swim, although the dry skin might be preferable to the damaging effects of sun exposure. The main goal of treatment is to moisturize and exfoliate. This helps prevent dryness, scaling, cracking and build-up of skin.