A current study published in Spine set out to determine the relationship between benign adverse events (reactions to treatment) and outcomes (neck pain and disability, perceived improvement) in a group of people who received chiropractic care for their neck pain.
529 patients participated in the study. 56% of the participants reported an adverse event during the first 3 treatments, and only 13% graded it as “intense”. Muscle or joint pain events were the most common types reported, and none of the events were considered serious.
The researchers found that if someone reported an “intense” adverse event during any one of the first 3 visits, they were less likely to report recovery on the fourth visit. What is interesting about this is that they didn’t have significantly more neck pain or disability than those who didn’t experience an adverse event.
At a follow-up 3 months later, those who had “intense” adverse events experienced the same recovery and pain reduction as those who didn’t have any adverse events.
The bottom line here is that even if someone reports an adverse event or reaction after treatment, it did not negatively affect their outcomes or recovery at 3 months. Moreover, it was only those who had an “intense” adverse events that reported less recovery in the short term (13% of participants).
It is also important to note that out of 4,891 treatments, no serious adverse events occurred. This adds validity to the current view that “ the benefits of chiropractic care for neck pain seem to outweigh the potential risks.”