There are certain oils that you should have in your meds cabinet and tea tree oil is one of them. It is a multi-purpose treatment oil. You can mix it with other oils too to increase its effectiveness. I picked up a useful tip from a forum user on the activistpost.com for treating eczema. They recommended mixing tea tree oil with almond oil. Have a look through this list and see what is applicable to your problems. By the way, did you read the top ten emergency essential survival oils here. Definitely another must have resource.
Essential oils have been used for healing and medicinal purposes for centuries and most certainly long before we had pills, capsules and big pharma to take care of our medical woes. And while there is a place for manufactured pharmaceuticals in our survival medicine kit, there exists the possibility that none will be available or that they will be in such scarce supply that they should be reserved for only the most dire of circumstances.