What are the common early symptoms of stroke? There are various early symptoms of stroke, and timely recognition of these symptoms and proper treatment are the keys to successful stroke treatment. Early symptoms of stroke are as follows: 1. Sudden onset of facial palsy and weakness of upper and lower limbs, especially unilateral. 2. sudden onset of speech, consciousness or comprehension disorders. 3. sudden onset of dizziness, balance disorder or difficulty walking. 4.Sudden onset of blindness in one or both eyes. 5.Sudden onset of severe headache of unknown origin.