skip to Cookie NoticeSkip to contents

Your health and safety remain our top priority: Learn about our Safe Care Commitment | Use our Prescreen app before arrival for faster entry | Read the COVID-19 Vaccine FAQs

Header Skipped.

Moyamoya Disease

Moyamoya disease is progressive narrowing of blood vessels in the brain, which results in the formation of fragile collateral vessels. It is a significant cause of stroke and brain hemorrhage in children and young adults. The high stroke risk from moyamoya, however, can be significantly decreased by bypass surgery. In bypass surgery, a blood vessel from the scalp is connected to a vessel on the brain surface in order to augment blood flow to the brain.

Related Disorders

Nirav J. Patel, MD, Department of Neurosurgery at Brigham and Women’s Hospital, performs an Extracranial-Intracranial Bypass to treat Moya Moya Disease, a rare disease of the blood vessels in the brain that can result in stroke. The surgery was performed using micro-anastomosis

Watch Dr. Nirav Patel discuss the life changing surgeries completed on a New Hampshire mother and daughter for Moyamoya Disease.

Contact Us

If you believe you should have an evaluation and would like to strong>schedule an appointment with one of our neurosurgical experts, call (617) 732-6600 to speak to one of our knowledgeable coordinators who can help to connect you to the doctor that best meets your needs or fill out an online appointment request form.


For over a century, a leader in patient care, medical education and research, with expertise in virtually every specialty of medicine and surgery.

About BWH