I can speak to the chiropractor portion in particular. A risk of chiropractic manipulation of the neck is injury to the vertebral arteries - a pair of arteries running alongside the spine in the neck and which supply much of the blood to your brain stem and the back part of your brain (particularly areas that are responsible for coordination of movement and vision).
Injury to either artery can result in a stroke in these parts of the brain. It’s not just theoretical, I personally have seen patients who had these sort of strokes following chiropractic manipulation.
I’m guessing OP was inferring that too vigorous of a neck massage could cause the same problem though I haven’t actually seen that.
I can speak to the chiropractor portion in particular. A risk of chiropractic manipulation of the neck is injury to the vertebral arteries - a pair of arteries running alongside the spine in the neck and which supply much of the blood to your brain stem and the back part of your brain (particularly areas that are responsible for coordination of movement and vision).
Injury to either artery can result in a stroke in these parts of the brain. It’s not just theoretical, I personally have seen patients who had these sort of strokes following chiropractic manipulation.
I’m guessing OP was inferring that too vigorous of a neck massage could cause the same problem though I haven’t actually seen that.