My neurologist did a full hormone and selected nutrient panel. He said that sometimes head hits can mess up your hormones via the pituitary gland. My thyroid and Vit D were low, getting those things to the right levels has helped me. You could also ask about vestibular rehab therapy for dizziness and balance. A lot of people have something called BPPV after concussions, you can search it online and there's lots of info, it is an inner ear issue. Might be worth asking about these things, I'm sure others will have good ideas as well. Good luck!