Hermione barely had time to register that Alecto’s wand arm had moved, and she threw her forearm up protectively, instinctively, but that, of course, did nothing—the Crucio hit her and she was on the floor, the pain everywhere, unimaginable, all-encompassing. Within moments of the curse hitting her, she knew instantly how it could drive someone to insanity. The sensation of pain without localization was the maddening part.  It was just  pain, everywhere and yet unreachable, pain worn against her muscles like a second skin, pain shot through her skull and her chest and her eyes and everywhere, all the time. 