A transient ischaemic attack (TIA) or ‘mini stroke’ happens when the blood supply to the brain is interrupted for a short period of time. It is often called a ‘mini-stroke’, as the signs are the same as those of a stroke, but they do not last as long. The signs of a TIA may disappear in a few minutes and last no longer than 24 hours. They are often a warning that a stroke may occur. The signs of a TIA depend on which part of the brain is not getting enough blood.
They are the same as the signs of stroke and may include one or all of the following: Weakness, numbness or paralysis of the face, arm or leg on either or both sides of the body Difficulty speaking or understanding Dizziness, loss of balance or an unexplained fall Loss of vision, sudden blurred or decreased vision in one or both eyesHeadache, usually severe and of abrupt onset or unexplained change in the pattern of headaches Difficulty swallowing Each year, approximately 189,019 strokes occur in the Hong Kong. Some of the people we talked to had taken part in a research study looking at stroke and TIA. This project is what is known as a ‘cohort study’, in which a group of people with a particular condition or set of characteristics are followed up long term.