How Subarachnoid Hemorrhage Leads to Cognitive Impairments

Explore why bleeding in the brain after a subarachnoid hemorrhage often triggers memory, attention and executive problems, and learn how doctors assess and treat these deficits.
If you’ve ever heard the term “brain aneurysm” and felt confused, you’re not alone. In plain English, it’s a weak spot in a blood vessel inside the brain that can balloon out. Most of the time it stays small and harmless, but if it bursts, it can cause a serious bleed called a hemorrhagic stroke. Knowing the basics can help you catch problems early and get the right care.
Doctors aren’t 100% sure why the wall of a brain artery weakens, but several things raise the odds. High blood pressure pushes extra force against vessel walls, making them more likely to bulge. Smoking adds chemicals that damage the lining of arteries. Family history matters too—if a close relative had an aneurysm, you’re at higher risk. Some people also develop aneurysms after head injuries or from certain genetic conditions.
Most small aneurysms cause no symptoms at all. When they start to grow or leak, you might notice a few warning signs. A sudden, severe headache that feels “worst ever” is a classic red flag. Other clues include double vision, eye pain, a drooping eyelid, or a numb feeling on one side of the face. If you get any of these suddenly, call emergency services right away. Even a milder, persistent headache or unexplained dizziness should prompt a doctor visit, especially if you have risk factors.
Doctors usually find aneurysms with imaging tests. A CT scan can spot a bleed quickly, while a CT‑angiogram or MR‑angiogram shows the exact shape of the vessel. If an aneurysm is found, specialists decide whether to monitor it or treat it based on size, location, and your overall health.
Small aneurysms that aren’t causing problems often just get watched. Your doctor will schedule regular scans to see if it’s growing. If it’s large, risky, or has already leaked, intervention is needed. Two main procedures are used:
Both methods are safe in most hands, but the choice depends on where the aneurysm sits and how you feel overall. Recovery time is usually shorter with coiling, while clipping may be better for certain locations.
After treatment or regular monitoring, lifestyle changes can lower future risk. Keep blood pressure under control with diet, exercise, and any meds your doctor prescribes. Quit smoking – even a few cigarettes a day can hurt your vessels. Limit alcohol, eat plenty of fruits and veggies, and stay active. Regular check‑ups are key, because new aneurysms can form over time.
Remember, most people with brain aneurysms lead normal lives. Knowing the signs, managing risk factors, and following your doctor’s advice give you the best shot at staying healthy.
Explore why bleeding in the brain after a subarachnoid hemorrhage often triggers memory, attention and executive problems, and learn how doctors assess and treat these deficits.