By: Branden Largent Like most 6-year-olds, Charlie Knuth loves to swim and run through sprinklers. But this wasn’t always the case. Because of a rare genetic skin disease — Epidermolysis bullosa — blisters covered 90 percent of his body for the first four years of his life. Bathing was once a daily struggle involving infection-preventing bleach, restraints and Charlie’s screams of agony. Today ...