Before leaving the house and my coat and bag, I also grab my crutch with some apprehension. A crutch that has become like an ally. One that helps me keep my balance and keep me upright when my legs threaten to give out. And when symptoms are at their worst, and everything feels like a battle, this crutch has become my weapon. But unlike a superhero, it is a weapon not for fighting villains and saving the world. No,...