Cerebral capillary occlusion generally refers to lacunar cerebral infarction, which may have no clinical symptoms, and may also manifest as purely motor light hemiparesis and purely sensory stroke, as well as ataxic light hemiparesis, and clumsiness of hand – dysarthria syndrome. 1. Pure motor hemiplegia: sudden weakness of one side of the limb, basically not accompanied by hemiplegia. 2. Pure sensory stroke: sudden onset of abnormal or reduced sensation in one limb, basically not accompanied by motor impairment. 3. Ataxic mild hemiparesis: patients may suddenly develop mild hemiparesis with mainly lower limb dyskinesia, often accompanied by obvious ataxic symptoms on the same side of the limb. 4. Clumsy hand – dysarthria syndrome: Patients may suddenly develop dysarthria, unclear spitting, mild swallowing dysfunction, mild paralysis of facial and tongue muscles on one side of the face, upper limb activities not as flexible as usual but without obvious limb paralysis, fine motor movements such as writing are often difficult, inability to touch the nose accurately, and unsteady walking gait. It is recommended to consult a doctor if you feel unwell.