It usually starts in the nerves farthest from the brain and spinal cord -- like those in the feet and hands. Then it may move up into the legs and arms. However, if you get treatment for the medical condition causing the nerve damage, you may be able to stop the damage -- and even reverse it.
If swallowed, tea tree oil can cause varying side effects ranging from drowsiness, upset stomach, vomiting, nausea and weakness, to coma, hallucinations, blood cell abnormalities, confusion and ataxia which affects muscle coordination and your ability to move voluntary muscles, states the American Cancer Society.
1 An acne treatment needs to contain at least 10% tea tree oil to fight acne infection. 2  Just smelling like tea tree oil does not mean a product actually fights acne infection. 3  Small amounts of tea tree oil that arenât enough to fight infection may still be enough to remove inflammation.