Could be related: If you have syringomyelia (fluid in the spinal cord) and syringobulbia (fluid in the brainstem) they are likely contiguous (connected) and the most common cause is a Chiari malformation. With a Chiari, you may have the sensation of blacking out with valsalva (cough or bearing down). There are other causes, so you should look into this soon and have it treated if possible.
Answered 6/11/2015
2.8k views
A doctor has provided 1 answer
A doctor has provided 1 answer
6 doctors weighed in across 2 answers
5 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question