I do not think so as it affects the liver, but it could be secondry to that problem.Please explain further.
Do you mean Psoriasis?
What does your dog have on his/her skin? It depends on what you mean.....if it's a red rash it could be caused by a few different things, including flea rash, allergies, contact dermatitis, scabies, tick bite inflammation....etc.
Do you have a picture?
just try half a piriton tablet for 5 days you can buy it in any chemist we use it on our show dogs hope this helps you.Diane