### Patient: Doctor, lately I've been having some weakness in my elbow and wrist, do you know what could be causing this?
### Doctor: Based on your symptoms, it's possible that you may have Moyamoya disease. This is a rare disorder that affects the blood vessels in the brain, which can lead to a range of symptoms including weakness in the limbs. I'd like to run some tests and scans to confirm the diagnosis and develop a treatment plan.