I think that two of the most important items to always make sure you have with you while camping is the Calamine lotion and some Benadryl capsules. It also helps to know what any type of poisonous plant looks like before going camping. My husband is so allergic to poison ivy, oak, and sumac that he once had to get two rounds of steroids and use Caladryl gel on it. I am not familiar with any natural treatments that you might find in the woods, so I would definitely make sure you have those medications on hand while camping.