If her lower body was limp she would not be walking at all. You apparent don't know what chronic means. You assume she is taking daily medications other than an antibiotic. And lastly, how do you know she is seeing specialists or even one specialist now. Sounds like you're doing a lot of guessing and assuming.
She takes Armour Thyroid for hypothyroidism, antihistamines for allergies, vitamins, Coumadin (blood thinner). She suffered from DVT (deep vein thrombosis) in 1998 and 2009, fractured her elbow in 2009 from a fall, and suffered a very serious concussion in 2012 after passing out. After she fell in 2012 it was discovered that she had transverse sinus venous thrombosis. Her doctor says that after the transverse sinus venous thrombosis was discovered Hillary was started on anti-coagulation therapy 'to dissolve the clot'. Hmmm. Coumadin is prescribed for tsvt and she is on it, but it says it does not dissolve clots, just prevents them. Odd that her doctor says it's to dissolve the clot.
Here's the letter her doc released in 2015.
http://www.nytimes.com/interactive/2015/07/31/us/politics/hillary-clinton-doctor-letter.html