Following up: Returned home yesterday from Johns Hopkins Baltimore after test to confirm reason
for my unsteady gait, years ago diagnosed as hydrocephalus, in which fluid accumulates in the brain.
'Long' story short, had spinal tap Wednesday morning, NO PROBLEM, NOPAIN, with before and after physical therapy (and woke up yesterday and walking around home today.) Looks like it's CERTAIN, woke up ready to shoot hoops (tho I've never done that!!! LOL!) so I expect to hear 'official' confirmation from the neuro team in a few weeks, paving the way for resolution! (which, holds breath) means/suggests insertion of a shunt in brain after hole 'drilled' 
to enable continual drainage of fluid so little if any accumulation, so MORE hoops!
That's all folks! (except, daughter who lives in NJ drove down to be with me. She's an occupational therapist so useful experience. My other daughter, who lives near me, had her own Dr. Appt. yesterday, so couldn't accompany me (which was a good thing 'cause the 'girls,' adult parents of youngsters themselves, don't speak to each other. I may have to knock some heads together later (joke?) but sadly I think there are unresolvable problems in this respect.
Staff @ Hopkins is SUPER!
More LATER in February.
= new reply since forum marked as read
Will be thinking of you, hoping, praying and sending light 
....and the shunt works so you can get back to normal!
Keep your spirits up. 
Hope it's resolved quickly, so we can continue to enjoy your photos. Keep us posted.
Doctors are doing a much better job for me now that I ask if my private nurse can come in with me. Also, my new wife.
Sending good vibes. I just hope it's not too bad for you.
You will be in our thoughts!
Familiar enough to be able to state unequivocally that surgery is the best and only way to treat it. You have to get that excess fluid out of there, and the only way to do that is to install a shunt to drain it away from the brain to another part of the body where it can be safely absorbed.
Fortunately, this is a relatively short and uncomplicated surgery and one that doctors have had plenty of experience with. They've been doing it on babies born with hydrocephalus for decades with great success, and I'm pretty sure that doing it on a full grown adult would be a snap by comparison.
Having it done in a world class hospital like Johns Hopkins is just about the best case scenario anyone could ask for. I'm sure elleng is going to be just fine! 
More info: https://www.hopkinsmedicine.org/neurology_neurosurgery/centers_clinics/cerebral-fluid/procedures/shunts.html
I see we were posting at the same time. 
I'm so glad that it has been sorted out for you. Best wishes for more shooting hoops for as long as you want to shoot them.
Had no idea you were going through this. I've found, the older I get, it's ALWAYS something!
Glad you went to the experts; seems the shunt will solve all your woes, and I just bet those docs have a bit of practice inserting them.
Hang in there, my friend!