yes I have the itch. I call it the "Roving Itch" becuase it moves randomly anywhere on my left side of my body. It happens during mini-flares or when I'm very tired. Or just when it feels like it.
It's very annoying. It does fall under the neurological pain spectrum so maybe you need a bit more amitriptyline to mask it? I know it decreased now that I'm no amitriptyline, but it does break through and annoy me frequently. But I suppose I weigh up the sedation of amitrip, vs. level of annoyance of itch.