Blurred vision that appears without warning. Or a deep, persistent pain in the abdomen that doesn’t seem to have an…

What makes them particularly concerning is their sudden onset alongside an extremely severe headache.

A person may initially think they are experiencing an unusually bad migraine.

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However, a first-ever thunderclap headache should not be assumed to be a migraine without urgent medical evaluation.

In some cases, bleeding around the brain can occur even when the person remains awake and able to speak.

Being conscious does not rule out a serious emergency.

9. Weakness, Speech Changes, or Other Stroke-Like Symptoms

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A ruptured brain aneurysm can sometimes produce symptoms resembling a stroke.

These may include weakness on one side of the body, difficulty speaking, confusion, visual disturbances, or problems with coordination.

Aneurysms can also cause neurological symptoms through mechanisms other than rupture, although this is less common.

Regardless of the cause, sudden neurological changes require immediate medical attention.

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A useful way to recognize common stroke symptoms is the FAST approach:

• Face: One side of the face droops.

• Arms: One arm becomes weak or difficult to raise.

• Speech: Speech becomes slurred or difficult.

• Time: Call emergency services immediately.

Other sudden symptoms, such as loss of vision, severe imbalance, or an unusual headache, can also indicate a neurological emergency.

Do not wait for every symptom to appear.

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10. Why Men May Face Higher Risks for Certain Aneurysms

The relationship between sex and aneurysm risk depends on the type.

Abdominal aortic aneurysms are substantially more common in men than in women.

Age and smoking history are particularly important risk factors.

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Men aged 65–75 who have ever smoked are a group for whom one-time abdominal aortic aneurysm screening is recommended by the U.S. Preventive Services Task Force.

However, brain aneurysms follow a different pattern.

Intracranial aneurysms are not generally more common in men; women have a higher prevalence in many studies, particularly later in adulthood.

Therefore, it is misleading to describe all aneurysms as predominantly male conditions.

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Men should understand their risks, but women should not assume they are protected.

11. Common Risk Factors for Aneurysms

Several factors can increase the likelihood of developing certain aneurysms.

Smoking

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Smoking is one of the strongest modifiable risk factors for abdominal aortic aneurysms.

It contributes to blood vessel damage and is associated with aneurysm development, enlargement, and complications.

Stopping smoking can reduce cardiovascular risk and is an important part of vascular health.

High blood pressure

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Persistently elevated blood pressure places additional stress on blood vessel walls.

Managing blood pressure is especially important for people with known aneurysms or other vascular conditions.

Increasing age

Some aneurysms become more common with age, particularly abdominal aortic aneurysms.

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However, aneurysms can also occur in younger adults.

Family history

Having a close relative with certain types of aneurysms may increase risk.

People with a family history of aortic aneurysm should discuss whether screening is appropriate.

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Genetic and connective tissue conditions

Some inherited conditions can weaken blood vessel walls and increase the risk of aneurysm or dissection.

Examples include Marfan syndrome and vascular Ehlers-Danlos syndrome.

These conditions require individualized medical assessment and monitoring.

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Other vascular conditions

Atherosclerosis and certain inflammatory or infectious conditions may contribute to aneurysm development in particular circumstances.

Risk factors differ depending on the artery involved.

12. Can an Aneurysm Exist Without Symptoms?

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Yes.

In fact, this is one of the most important things to understand.

Many aneurysms remain silent for years.

A person may feel completely healthy while an aneurysm is present.