Psoriasis is a condition that makes the skin irritated and itchy.
Scientists know that stress has an effect on psoriasis.
But new research could lead to improved treatment in humans with the skin condition.
Researchers blocked a type of steroid in mice and found stress did not have as strong of an effect.
Interestingly, one of the ways scientists blocked the steroid was by treating the mice with RU486, better known as the abortion pill.