A cerebral aneurysm is a bulge in a blood vessel in or around the brain. A brain aneurysm occurs when a bulge develops in a blood vessel in the brain and fills with blood; which eventually turns into a bag called an aneurysm. Aneurysms often cause no symptoms; Unless it opens and leaks blood or causes symptoms due to pressure on the surrounding brain tissue.

Sometimes the aneurysm ruptures due to excessive growth. A ruptured aneurysm is usually associated with a very severe headache; which requires a neurology medical emergency. This severe headache occurs suddenly and lasts from several hours to several days. The risks of aneurysm rupture usually depend on the location, size, and shape of the aneurysm. Of course, don't forget that not all aneurysms rupture. In less cases,  as a result of the overgrowth of the aneurysm and creating a lot of pressure on the surrounding space, the aneurysm causes brain dysfunction and causes symptoms such as convulsions, limb weakness, double vision, etc. Rare types of aneurysm do not have a typical bag shape, but change the wall of the vessel and cause bleeding or embolic stroke. These types of aneurysms are called Fusiform and Dissecting, which can be treated.

Brain aneurysm treatment includes different methods; which are used to prevent blood from entering the aneurysm and to divert the blood flow of the aneurysm. When blood rushes into the bulge in the vessel, the aneurysm enlarges. This issue is similar to the deflation of a balloon; As it fills with air, it is more likely to explode. If the aneurysm ruptures, brain hemorrhage occurs. Aneurysms sometimes lead to hemorrhagic strokes and bleeding in or around the brain; which can lead to brain damage and be fatal.