Transient Ischemic Attack (TIA) Signs and Symptoms
Clinical Presentation
- The primary signs of a Transient Ischemic Attack (TIA) include transient, fluctuating, or persistent unilateral weakness, speech/language disturbance, hemibody sensory symptoms, monocular vision loss, hemifield vision loss, and other focal neurological deficits that typically resolve within 24 hours 1, 2
- Motor symptoms of TIA include unilateral weakness affecting face, arm, and/or leg 1, 2
- Speech/language disturbances in TIA include aphasia and dysarthria 1, 2
- Sensory symptoms of TIA include hemibody sensory loss or paresthesia 2, 3
- Visual disturbances in TIA include monocular blindness and homonymous hemianopsia 3, 4
- Posterior circulation symptoms of TIA include ataxia, dizziness, incoordination, cranial nerve deficits, dysarthria, and dysphagia 2, 3
Risk Stratification
- The risk of recurrent stroke after TIA varies based on symptom type and time since onset, with high-risk symptoms including transient, fluctuating, or persistent unilateral weakness and language/speech disturbance 1, 2
- The 7-day stroke risk can be as high as 36% among patients with multiple risk factors 5
- Recent data shows lower recurrence rates with rapid access to TIA clinics, with stroke recurrences at days 2, 7, 30, 90, and 365 being 1.5%, 2.1%, 2.8%, 3.7%, and 5.1%, respectively 5
Public Awareness and Education
- The American Heart Association recommends the FAST (face, arm, speech, time) message campaign for public education efforts on recognizing TIA symptoms 6
- One or more of face weakness, arm weakness, and speech difficulty symptoms are present in 88% of all strokes and TIAs, highlighting the importance of immediate activation of emergency medical services 6