A stroke can sometimes be preceded by warning signs, but the idea that your body always warns you exactly one month before a stroke is not medically proven. Some symptoms can appear suddenly and require urgent attention.
Possible warning signs that should not be ignored include:
- Sudden weakness or numbness in the face, arm, or leg—especially on one side of the body
- Sudden trouble speaking, understanding speech, or confusion
- Sudden vision problems in one or both eyes
- Sudden dizziness, loss of balance, or difficulty walking
- A sudden severe headache with no known cause
- Brief episodes of stroke-like symptoms that go away (possible transient ischemic attacks, or TIAs)
- New difficulty coordinating movements or unusual clumsiness
- Sudden facial drooping or an uneven smile
- New problems with memory, thinking, or alertness
- Unexplained episodes of weakness or faintness
A useful emergency check is FAST:
- F — Face drooping
- A — Arm weakness
- S — Speech difficulty
- T — Time to call emergency services
If these symptoms appear suddenly, seek emergency medical help immediately—even if they go away. Early treatment can greatly affect outcomes.
