Probably. Haven’t had a CBC in a while to see if levels are getting worse, but I’m pretty sure PA resulted in nerve damage to one of my eye nerves, giving me double vision.
By the time my D. O. discovered the B-12 problem, it was too late to save the nerve, and I had to have eye muscle surgery to mitigate the double vision. (Long story.)
My mom has it, and at this point in time (94 YO) she has no feeling in her legs to above the knees.
My FIL had it, and my hubby is probably developing it. Your description sure sounded familiar. It does seem to be hereditary in a lot of families, esp. northern European. Good luck. Take good control of the B-12 levels to minimize damage.