Delayed relief from DPPR?

Encountered a few of these, inject patient and 4 hours later they get relief and then pain comes back a day or two later. Physiologically it doesn't make much sense given the onset and duration of local anesthetics. Is it essentially a fluoro-guided trigger point injection? What do you do for these folks? Block again? Burn anyways? Tell them to buy a foam roller?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pain Medicine Source Type: forums