Go inside the body to see what causes psoriasis, a common skin condition and autoimmune disorder. Dr. Oz explains the treatment options.

Animation produced by Visible Productions Inc.


After years of trying to get pregnant, doctors told Kelsi Pierce it would be near impossible for her to conceive a child. However, Kelsi got the surprise of her life when her mom volunteered to be her surrogate — and she found out she, too, was pregnant!