The most common precursor of stroke in the elderly is transient ischemic attack. Transient ischemic attack shows a variety of symptoms, mainly in the following aspects: 1. Sudden dizziness, unsteadiness, dizziness, headache; 2. Patients have transient speech inflexibility and difficulty in finding words; 3, The patient has sudden onset of weakness and numbness of one limb, which is relieved after a few minutes; 5. The patient suddenly has a transient blackness and blackness in front of the eyes. All the above symptoms are caused by transient ischemia in the brain, which is often a precursor of stroke, so you must go to the neurology department of the hospital immediately to prevent the occurrence of stroke through medication.