If you're using an essential oil topically to cure a disease, put it in right place in your body. The best places in your body are direct contact with the mucous membranes, which would be the most permeable to chemicals. Put the oil on the back of the neck, the front of the neck, the trunk (chest, stomach, back), arms (including hands and fingers), and legs and feet. The best bang on your back is to put them in the back of your neck and your stomach, especially when you're trying to combat systemic issues. like inflammation, fatigue, and pain.
The true healing power of applying essential oil topically gives you a two-for-one benefit.