Originally Posted by abdussowe
Afraid I can't be of much help as the possibilities are too numerous. The general condition may be neurologic in origin, anything from a pinched or inflamed nerve or it could be circulatory in origin, a narrowed artery.
Causes could range from nutrition, vitamin deficiency, to disease or injury. Even migraine can sometimes result in paresthesia.
Until they are ruled out you should assume that any associated symptom (such as back pain) is related as it could
be important to the eventual diagnosis. Write each down even if it no longer seems important when you see the doctor. The facial line or "wrinkling" you mention is important for the same reason. I'm sure that in order to diagnose this you will need to furnish a medical history, have a physical examination, and laboratory tests, to begin with. .
These various possibilities have very different outcomes and treatment plans. Nerve fiber irritation/inflammation, as example, is often self correcting, while circulatory problems move in the opposite direction without treatment. So it's important to be seen by a qualified doctor, preferably neurologist. In the meantime you should make note of the following and provide the information to the doctor:
Visual disturbance, particularly on the affected side, including dry eye.
Sense of smell
Loss of balance
General mobility and coordination
Loss or change of taste for foods
History of migraine
Wish I could be of more help. Wish you the best and hope it turns out to be in the very minor category.