Share on Pinterest Super Bowl LIX champion Dallas Goedert of the Philadelphia Eagles shares his journey with plaque psoriasis, an autoimmune skin condition. Brooke Sutton/Getty Images Super Bowl ...

Feeling a little itchy? Here's how to recognize the most commonly undiagnosed skin irritations, including the one you may have on your elbow or ankle right this minute.

The first exposure sensitizes your body to the allergen, while the second exposure causes the rash. View the slideshow below for photos of irritant contact dermatitis and allergic contact dermatitis.

Contact dermatitis is a common cause of a rash in one area. This is especially true of a small rash that will not go away. Contact dermatitis usually starts as raised red spots. It can change to ...