Regarding itchy ears as TMS, my dad developed very inflamed/itchy ear canals after a stressful move a few years ago. He wasn't really happy in the area they moved to. He had to have monthly appointments at the ENT office to get his ears cleaned. They would pull out lots of dried skin, etc. and he never got a clear diagnosis about what it was or what was causing it. The ENT was stumped.
My parents moved again after that, to the area where they grew up. Being back to the place he loved, his ear itchiness gradually went away. He hasn't had an ENT appointment in years. The whole thing had to have been stress-induced.
My dad being my dad, he didn't really obsess about it, although the itchiness did annoy him at times. Thankfully for him, he doesn't really have a TMS, high anxiety personality. He certainly doesn't catastrophize physical sensations like I've been know to do. I think his story illustrates though that mindbody symptoms can and will happen to anyone under stressful circumstances. Oh, and that ear itchiness can definitely be TMS.
As a side note, when I'm under higher stress than usual, the entrance to my ear canals will itch at times. It switches from the left ear to the right, no rhyme or reason, classic TMS. Funny thing is, I never had itchy ears until observing my dad going through his ordeal.

The suggestibility of TMS...