When are imaging studies considered for rapid eye movement (REM) sleep behavior disorder?
Doctors often don't do imaging studies (for example, a CT scan and MRI of the brain) if you have RBD and have no neurologic cause of RBD. But you may get these tests if the neurologic exam points to a possible problem. Doctors should also consider doing imaging studies in people younger than age 40 where there is no known cause of RBD, such as alcohol or medication use.
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