3. Sudden severe headache
This is no ordinary headache.
Features:
appears suddenly, like a "bolt from a clear sky"
extremely severe, often described as the worst pain of life
can quickly subside
Cause:
Possible serious spasm or problem in the brain vessels.
4. Short-term speech disorders
Speech may be disrupted briefly, but this is a very important signal.
Example:
You want to say something simple, but the words get jumbled up or come out unintelligible.
What it shows:
Temporary oxygen deprivation to the areas of the brain responsible for speech. This significantly increases the risk of stroke in the next 24–48 hours.