Cannabis products have become a popular treatment option for migraine sufferers, but temporary relief may be accompanied by rebound headaches, according to a new study. The preliminary research was recently published by the American Academy of Neurology and is due to be presented in mid-April. The results are based on data from 368 patients with chronic migraine.
Of the 368 people whose data was used in this new study, 150 reported using cannabis to treat their migraines. After evaluating the data, the researchers found that cannabis users were six times more likely than non-users to experience headaches from overuse of medications, also known as rebound headaches.
This was a retrospective study, which was a limitation, but the findings open the way for future longitudinal studies. The results indicate that cannabis may not be an adequate solution for the treatment of migraines. Cannabis, like opioids, has been linked to a part of the brain also associated with migraine: periaqueductal gray.
Study author Niushen Zhang, MD, said:
Many people with chronic migraine are already self-medicating with cannabis, and there is some evidence that cannabis can help treat other types of chronic pain. However, we found that people who were using cannabis had significantly increased odds of also having medication overuse headache, or rebound headache, compared to people who were not using cannabis.
This new study joins one from Washington State University, which found that inhaled cannabis products can significantly reduce migraines and headaches. The data was reported in real time during migraine, however, and the research did not include any details on whether rebound headaches were experienced later.