What are brain aneurysm and AV malformation that Salman Khan suffers from?
A brain aneurysm is a bulge in blood vessel in brain, caused by weakened vessel wall. It often develops silently and may not show symptoms unless it ruptures. An arteriovenous malformation (AVM) is a tangle of blood vessels in brain or on brain surface. This causes blood to bypass usual network of vessels and flow directly from arteries to veins.