Waardenburg syndrome. Description. Waardenburg syndrome is a group of genetic conditions that can cause hearing loss and changes in coloring (pigmentation) of the hair, skin, and eyes. Although most people with Waardenburg syndrome have normal hearing, moderate to profound hearing loss can occur in one or both ears. The hearing loss is present from birth (congenital).
While both retinol and Retin-A contain retinoids, they differ in their concentration. Retinol and other forms, such as retinal and retinyl palmitate are found in many over-the-counter anti-aging creams. While these all contain a form of vitamin A, the concentration of retinoids is weak. Retin-A is a prescription retinoid and is a brand name for tretinoin, which is the carboxylic acid form of vitamin A and was one of the early topical acne treatments. Retin-A is sold by prescription because its acid composition is much greater than in over-the-counter products.
Retin-A, sold under the generic name tretinoin, is a form of vitamin A that's applied to the skin to promote skin renewal. The medication is prescribed to treat acne, and to make wrinkles and fine lines smoother and less noticeable.Retin-A is also given to people that have hyperpigmentation due to aging skin.ontact your doctor if you have severe skin irritation or if your acne doesn't improve in eight to 12 weeks. While on Retin-A, it's important to avoid sunlight as well as sunlamps or tanning beds.