Has anyone had trouble with rashes or reddening of the skin while on Pentasa? I've been on it for many years and recently started breaking out in a rash. I was on Prednisone for a bit and the rash got better, but flared up as soon as I stopped taking it. The rash is on my legs and arms. All tests have come back negative for anything serious, so I'm thinking it has to be the Pentasa. Thanks!