Prednisone
"I took prednisone twice for my lichen planus. the 1st time it worked great, a lot of my plaque areas cleared up and went away, however anytime I was experiencing stress, a change in other medications, anxiety ect, I broke out in new sites. The 2nd time I took prednisone I experienced severe side effects. It caused a perforation in my bowel, stomach and lower intestine. I also got a abscess under my liver that had to be tubed. I spent 6 days in the hospital and was  given a PIC line for administration of IV antibiotic Zosyn every 6 hrs for 30 days after release from the hospital. (that then gave me c difficile, not once but TWICE.) It did help with my lichen planus, but the side effects for me greatly outweighed its successes."