I suffer with TN and severe Neurological Hypersensitivity, amongst others. Allodynia strikes in my face and limbs - especially legs - and my back. The touch of my clothes causes pain, as does sitting or laying down. Hot showers are a burning Hell. My family know not to touch me, no hugs, no handshakes. The only touch I can abide is that of my daughter's dog as the endorphins take over for a short while.
Tactile therapy sounds like the worst thing I could put myself through, but this is me and I don't like being negative. My advice to you would be to be certain this is what you want to try - positive mind, positive outcome. Start slowly, know your limitations and don't get discouraged early on.
Wishing you luck.

Dave.