I do what doctors tell me to do until the symptoms go away or I learn to live with it. Never give up hope. For instance, my physician told me my arm pain was a pinched nerve and there was nothing more I could do about it that didn't involve intense surgery. I had extreme muscle deterioration in my arm because the pain was so bad. I continued to ride and by chance, found a competant chiropractor that worked on me with adjustments and physical therapy. I hardly feel a thing now and that was 10 years ago.
I have had several concussions before, torn my rotator cuff, broken both my wrist bones, and I have broken my neck. This, along with a horse related accident with whiplash would tell any doctor that I should never ride again. But riding is what makes me whole, so I ride.
I just simmer down the risks. Do I train anymore? No, I only train my own horse (and got suckered into training a rescue horse just recently, but I don't professionally train anymore). Training professionally is where all my injuries came from, because I took on rank horses. I don't do that anymore. Now, I just ride one horse (sometimes another) and I'm very happy about it.
I have memory loss, trouble concentrating, and sometimes the pictures in my mind won't form words. I also forget easily, and sometimes instantly. This is all due to the concussions I've suffered through the years, and yet I still ride.
It is your doctors obligation to suggest to you the safer alternative. That way, if you ride with a doctor's clearance and something happens, you can't come back and sue them. They will tell you not to ride to keep you and themselves safe. If you are going to ride, do it with your own precausions and do it as safely as possible.
And those who were seen dancing were thought to be insane by those who could not hear the music