The oat (Avena sativa), sometimes called the common oat, is a species of cereal grain grown for its seed, which is known by the same name (usually in the plural, unlike other cereals and pseudocereals). While oats are suitable for human consumption as oatmeal and rolled oats, one of the most common uses is as livestock feed.
Oat straw is used for the flu, swine (H1N1) flu, coughs, bladder disorders, joint pain, eye ailments, frostbite, gout, and a skin infection called impetigo. Topically, oats are used for skin conditions including itchiness, dryness, oiliness, weeping eczema, and contact dermatitis. Oats are also applied to the skin for chicken pox, osteoarthritis, liver disorders, and added to foot baths for chronically cold or tired feet.