Jennifer- while it would not be impossible to have symptoms that far out, I would say egotism 12 hours after. Would be rare. But…. certainly possible. We really are not sure how long different checmical changes occur so I would hesitate to say it is coincidence. Local, systemic and segmena effects are all right there, so needling the neck can be powerful.
It should be a very transient symptom though and should be cleared up by now. How is the patient doing? I would be cautious moving forward.