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.
Tea tree oil can be toxic. Just because it's natural, or an herb, or used in aromatherapy, or has potential health benefits, does not mean it's safe for all uses. You can read more about the safety of eating or drinking tea tree oil here. Please don't do what this visitor to Tea Tree Wonders has reported.