The FAST test
The first signs of a stroke can be very sudden. Applying the FAST test can indicate whether the symptoms you are observing suggest the person is having a stroke or TIA:
Face. Can they smile? Has their face fallen on one side?
Arms. Can they raise both arms and keep them there?
Speech. Can the person speak clearly and understand what you say? Is their speech slurred?
Time. Time to call 999 if you see any single one of these signs.
Ambulance staff are trained to assess people with a suspected stroke and get them to an appropriate hospital for tests and urgent treatment. The sooner you receive appropriate treatment, the better your chances of a good recovery.