A 46-year-old member asked:
what is the difference between arachnoid and sub arachnoid?
1 doctor answer • 2 doctors weighed in
Dr. Pamela Pappas answered
Psychiatry 42 years experience
Brain membranes: There are 3 layers of coverings on the brain & spinal cord. The outermost is the dura mater; middle one is called "arachnoid, " and the innermost (lying directly on the brain & spinal cord) is the pia mater. "subarachnoid" means in the space beneath the arachnoid membrane, yet above the pia mater. There can be bleeding in the subarachnoid space, due to damaged blood vessels or aneurysms.
5108 viewsReviewed >2 years ago
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
Last updated Sep 28, 2016
People also asked
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits
$15 per month
Disclaimer:
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.