These symptoms can also be caused by other conditions, so they do not automatically mean someone has an aneurysm. Still, sudden or unusual neurological symptoms should not be ignored, especially if they are new, intense, or worsening.

When Symptoms Become an Emergency

The most dangerous situation is a ruptured aneurysm. A sudden, severe headache is one of the most important warning signs. Some people describe it as the worst headache they have ever experienced. Other emergency symptoms may include nausea, vomiting, stiff neck, sensitivity to light, confusion, vision changes, seizure, weakness, or loss of consciousness. The American Stroke Association warns that a sudden intense headache may signal a ruptured aneurysm and requires immediate medical attention.

Stroke-like symptoms should also be treated urgently. The CDC advises calling emergency services right away for sudden numbness or weakness, confusion, trouble speaking, vision trouble, trouble walking, dizziness, loss of balance, or a sudden severe headache with no known cause.

Who May Be at Higher Risk?