I have had skin Lichen Planus for about 1-1yrs. I tried all the Dr's suggestion. But it always returned just as bad. Finally and herbalist for a health food store in Atlanta Georgia call (i think) the Garden of Eden, told me to take 2000-3000mg of L-Lysine & 50mg P5P (B6) 3x per day.
And from the first 1000 mg that evening my itching & breakouts decrease about 99%!! I like the L-Lysine by Solaray that also contains vitamin C, Zinc and Vitamin B6. Hope this helps.