## Warning Signs of a Brain Aneurysm
Many unruptured brain aneurysms cause no symptoms. However, if an aneurysm grows large enough to press on nearby nerves or brain tissue, it may cause symptoms such as:
### 1. Severe Headaches
A sudden, extremely intense headache—often described as the “worst headache of my life”—can be a warning sign of a ruptured brain aneurysm.
This type of headache comes on suddenly and reaches maximum intensity within seconds or minutes.
It is a medical emergency.
### 2. Vision Changes
An enlarging aneurysm may affect nearby nerves that control the eyes.
Possible symptoms include:
* Blurred vision
* Double vision
* Loss of part of the visual field
* Pain behind or above one eye
These symptoms should be evaluated promptly.
### 3. Drooping Eyelid
Pressure on certain cranial nerves may cause one eyelid to droop.
Although drooping eyelids can have several causes, sudden onset—especially when combined with other neurological symptoms—requires immediate medical attention.
