When my friends and I were in high school we tried the loma lux acne pill. One of my friends has now developed severe psoriasis. I believe he acne pill to be the cause. I am not for sure, but it seems like I can remember psoriasis being a "side effect" of the acne pill. She has conctacted loma lux and they deny these claims. They say she is the only one who has ever stated this. I find that hard to believe. Try at your own risk, although it has worked for others.