Last week, before regionals, my son broke out in a major allergic reaction to some immunity booster pills he was taken to avoid sickness. We didn't know what it was but took him to the clinic and got confirmation of the allergic reaction, not an infectious condition.
He cleared up well prior to weigh-ins but the refs asked about what was on his face, which was mostly acne. I made sure the note from the PA said "non-contagious condition" and that sent him through with no other questions asked. Sure glad we had that note.