Novel Strategies for Reducing Burn Scar Itch

The purpose of this study is to examine the effect of a new approach to treating burn scar itch. In other patient populations experiencing itch, H2 antihistamines and/or topically applied cromolyn sodium have decreased itch. We believe that these medications will reduce itch from burn scars. To test this idea, the investigators will compare two methods of treating itch: 1) recommended oral diphenhydramine (Benadryl) with placebo capsule and placebo lotion and 2) recommended oral diphenhydramine (Benadryl) with administration of oral famotidine (Pepcid) and topically applied cromolyn sodium.