I was also going to suggest benadryl creme, so I am glad your pharmacist beat me to it. But, I would also take an oral benadryl at bedtime when you are going to sleep anyway, just to get the immune response under control. Then keep it clean to prevent infection while it heals. I would only use the benadryl cream until the allergy part is controlled, since the actual road rash may take longer to heal. A trip to a doc may not be a bad idea either. A friend of mine also thought she had just a tad of road rash, but it got infected and she was off work for a week with IV antibiotics. Even if your docs office is closed, an urgi care clinic should be open.