Migraine Headaches Support Group
Migraine is a neurological disease, of which the most common symptom is an intense and disabling episodic headache. Migraine headaches are usually characterized by severe pain on one or both sides of the head and are often accompanied by photophobia (hypersensitivity to light), phonophobia (hypersensitivity to sound) and nausea.
Ask the dentist what is the name of the numbing agent. Tell him you have had an allergic reaction to it and would like a different numbing agent.
Here are the details Wikipeadea website of the main numbing agents used by dentist.
https://en.m.wikipedia.org/wiki/Dental_anesthesia
The above is what I would do. If I think something has caused my migraine, I don't eat it ... drink it anymore.
You could have recently been more sensitive to that numbing agent.
Sanzra