Gastroparesis is a delay in stomach emptying without a known blockage or obstruction. This causes symptoms those with migraine also experience such as nausea, vomiting and abdominal pain. A study found that stomach emptying was delayed in people with migraine.1 Delayed gastric emptying and vomiting can affect the absorption and efficacy of migraine medications.

Another study found that out of 511 people with gastroparesis 36.6% reported having migraine attacks.