I'm sorry you have all this stuff going on, your brain scan is at least revealing something, a crescent line could be significant. I had a crescentic 1 inch lesion manifest itself and embedded in my skin, still have it, it will never fade.
did your neurologist show you the scan to see the size of the crescent line?
the US system is unfair if you happen to be poor, it's a hard country to survive in especially if you are in ill health but those hardened greedy takers are getting richer and richer every day with no conscience as to those suffering around them.
today I have had a gum infection, felt awful, shivering so will start Antibiotic erythromycin for a week so cannot take any Ivermectin as not sure it is compatible.