Anyone had problems with liver or severe itching with rash?

I have been taking Klonopin for, oh I guess, about 15 years now. The treatment of panic attacks that I have had since my mid 20's, darn near 40 years now, has been very well under control for the period of time that I have been taking this drug. It has done its mission well and I would hate to have to turn to another drug by trial and error to find anything that works as well. Only on rare occasion do I feel like retreating from any form of activity that would bring on an attack. I have recently been suffering from extreme itching on my upper body(mostly back,face and scalp. Thinking it was dry skin I went to the Dr. for treatment. He took a blood test just to be on the good side of safe because he said that blood work would show any idication of something else being the reason I was itching. He found "elevated counts in liver function". At this point I don't know exactly what he was talking about but when I talked to my pharmacist he advised me that Klonopin can have an effect on the liver. I am going for more tests tomorrow. I guess I would like feedback on 2 things. Is there another drug out there that works at least as well as Klonopin and has anyone else had the same problem as I am having now? Please respond to this. If you have ever been troubled with Panic attacks, sometimes 5-8 a day you would certainly understand my concern. I think I'd rather die of Liver problems than have another panic attack. Thank you