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It may be a form or parathesia from nerve irritation
If there is a pinched sensory nerve from injury/muscle spasm this temporary problem can persist for days to a couple weeks. Often it is nothing to worry about. Massage therapy over the area, especially to the muscles next to the spinal column on that left side can help. Stretching exercises as well. But there are ofcourse other causes of this based on the history of these symptoms and your underlying medical history, if any.
The red flags when you absolutely need to see a doctor is if you are experiencing weakness in a focal region of the body, or speech problems as this can be signs of a stroke especially if you have this history. If you have history of seizure this could be a focal seizure, but less likely if this is the only complaint. Another possibility is shingles, without the rash. But most people experience pain, but itching/or tingling can be a possibility and usually a rash will develop. Ultimately like every medical complaint, a physical exam is recommended by a PA, NP, or physician. I hope I was able to help ease anxiety regarding your complaint.