Brainstem activation specific to migraine headache

Research indicates that the brainstem activates during migraine without aura (MWOA). In contrast, cluster headaches show hypothalamic activation. This study examined a patient with both migraine and cluster headache. The imaging used was positron emission tomography during an active cluster headache. The patient received 1.2 glyceryl trinitate before the imaging. During the migraine, dorsal rostral brainstem activation occurred. Interestingly, there was no activation in the hypothalamus region. These findings suggest that migraine headaches involve the brainstem in significant ways. Additionally, they highlight different areas activated during cluster headaches. This research indicates a potential method for distinguishing primary headache types. Functional imaging could help differentiate between headache disorders typically diagnosed based on clinical evaluation. Overall, this study advances our understanding of headache mechanisms and underlying brain regions. Clinical relevance: This research suggests that migraine and cluster headaches have distinct brain activation patterns, potentially improving diagnostic accuracy and treatment strategies for patients experiencing these conditions.