I'm always curious and fascinated by the natural healing "agents" we have in our garden and kitchens. Interesting read on the use of ginger root and even ginger oil. Many beneficial uses, when rubbed on or soaking feet in ginger-infused basin of warm water:
Warming and stimulating, ginger promote circulation to peripheral limbs. This is good for folks with slow circulation, cold hands and feet, low energy, depression and high cholesterol. Ginger is also excellent for cold, stiff joints and arthritic conditions where the pain is alleviated by heat.
thymeherbal.com is the referenced site.
Also in medicalnewstoday.com, it's revered that ginger oil contains a compound called zingibain, which possesses potent anti-inflammatory properties. Zingibain, therefore, may help reduce neuropathic pain that results from inflammatory conditions.
Hope this helps. Health is Wealth