The precursors of epilepsy include sensory aura, motor aura, cognitive impairment, and mental abnormality. 1. Motor aura: there will be numbness of one limb or involuntary shaking of one limb. 2. Sensory aura: seeing strange objects, hallucinations, hallucinations of hearing and smell. 3. Cognitive disorders: déjà vu, or unfamiliar sensations, things become bigger or smaller. 4. Mental abnormality: there will be a situation of not being able to respond to the call or staring blankly in the early stage of the attack. It can also be characterized by a particularly short temper or a change in personality. Some seizures may have no aura. If you are suffering from epilepsy, you should consult a doctor in time and standardize your treatment under the guidance of a professional physician.