Rashes are caused by a variety of allergens or irritations, with the most common form being contact dermatitis. As the name suggests, this type of rash appears after coming in contact with an irritating substance causing redness, itching, and small bumps to appear on the skin.

Rashes can occur by consuming, handling, or touching certain chemicals, allergens, and even natural substances such as grass or poison ivy which is why it is so important to see your dermatologist if a sudden rash appears on your skin. This is especially true if the rash causes pain, spreads, or becomes inflamed. Since most rashes are minor, at-home treatments are usually the first step in treating rashes.