Not every headache is a warning sign.
But a specific type can be:
“Thunderclap” headaches
A severe headache that comes on suddenly and feels unlike anything a person has felt before.
Chronic new headaches
Headaches that last for days or weeks and feel different from normal migraines.
These can signal early problems in blood vessels that increase stroke risk.
4. Short Episodes of Vision Problems
Vision changes that come and go may suggest disruption in blood flow behind the eyes.
These include:
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Sudden blurry vision
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Seeing double
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Losing sight in one eye for a few seconds ("curtain effect")
Even if the symptom disappears quickly, it is a serious warning.
5. Sudden Numbness or Tingling in the Face or Limbs
If the feeling appears on one side of the body, even for a moment, it may indicate a temporary brain blockage.
Examples:
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One arm feels weak
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Half the face tingles
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One leg feels “heavy” or weak
If this repeats within 90 days, it must be checked.
6. Trouble Understanding or Speaking Clearly
Weeks or months before a stroke, a person may notice brief episodes where:
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They can’t find the right words
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Their speech becomes slow or unclear
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They suddenly forget simple terms
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They misunderstand what others are saying
Even if it lasts only seconds, it’s an early brain warning.
7. Sudden Personality or Cognitive Changes
When parts of the brain don’t receive enough blood, behavior may change.
Possible signs:
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Unusual irritability
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Confusion
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Difficulty concentrating
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Memory lapses
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Slower thinking
These changes are subtle but significant if they happen repeatedly.
