1. Medical care for dependents used to be fairly good
but not since the Republicans decided that you don't deserve health care any more than veterans do. Sequestration has also likely hit it hard. Don't take it quietly, educate anyone you can.
A diagnosis generally means there is a treatment unless it's something we don't know how to treat, like ALS. Even if you do end up in a chair short term, it's not likely that you'll stay there.
There is a clear blood test diagnosis for NMO. MS is commonly diagnosed through spinal fluid analysis and now by MRI. Although the symptoms overlap, the diagnosis and treatment do not. You need to know for certain what you've got.
The good news is that both of them are treatable, although not curable.