Itching and Body Work

A common aftermath of body work in  general can be redness and itching of the skin. I have seen this especially evident in the trunk and ribcage area and can sometimes be rather pronounced. I was taught that this was a reaction to histamine released from the cells, creating an itching sensation. What have you been taught? Also, why does it seem more evident in the trunk vs other parts of the body?

I have a few good theories that I will share, but I invite your feedback.

Walt Fritz, PT