Assuming you're someone who has stuttered since childhood: the cause of developmental stuttering is still unknown and under research. There is thought to be a genetic and a neurologic component. That being said, unless you're getting a functional MRI like they often do in research (to see where parts of the brain have activity) -- a regular MRI probably won't show anything unusual. Regular MRIs are pictures of the brain (like a snapshot in time) and do not capture functional activity. Here are a few links with more info about the causes of developmental stuttering: * https://westutter.org/causes-of-stuttering/ * [https://www.stutteringhelp.org/faq?gclid=Cj0KCQjw2v-gBhC1ARIsAOQdKY2CfoPMZbnLn9UITRY0KFa8HLxgUJ1Xsw1U697fd9-NwIb\_GpwuIw0aArV8EALw\_wcB](https://www.stutteringhelp.org/faq?gclid=Cj0KCQjw2v-gBhC1ARIsAOQdKY2CfoPMZbnLn9UITRY0KFa8HLxgUJ1Xsw1U697fd9-NwIb_GpwuIw0aArV8EALw_wcB) If you suddenly start stuttering after never having stuttered as a child, then that is concerning for a medical issue. I don't often see patients with acute onset stuttering because it is rare, but this can be related to a new neurologic cause (i.e. stroke, seizures, brain tumor), drug-induced, or psychologic. Definitely would be concerning and warrant an ER visit!