Is it common for symptoms to change sides?

#1 · January 31, 2021, 9:05 pm

My own PHP started on the left, then got better within a week or so, only to appear again on the opposite side, where it persisted. This reminded me of numerous cases in the past where my clients complained of a similar pattern. I came to expect it, for example, in cases of 'whiplash' injury to the neck.

I wonder, is this common phenomenon that no-one bothers to report on? If so, it could be telling us something about the aetiology of the problem. What is your experience?