Drowsiness of patients with cerebral infarction is not necessarily due to aggravation of the disease, but may also be related to physiological factors. 1. Physiological factors: patients with cerebral infarction may suffer from insomnia at night due to excessive mental stress and tension, and may experience drowsiness during daytime due to sleepiness. 2. Disease aggravation: If there is a progressive stroke, the symptoms may gradually aggravate, and the patient may suffer from drowsiness, drowsiness and coma. It is recommended to consult a doctor in time and adjust the treatment plan according to the condition. If the area of cerebral infarction increases and other parts of the brain are obstructed, the patient may also experience drowsiness. 3. Sleep apnea syndrome: If patients with cerebral infarction are combined with sleep apnea syndrome, due to poor respiration and lack of oxygen during the night sleep, resulting in daytime drowsiness, it will also be manifested as drowsiness. Patients with cerebral infarction should pay attention to the drowsiness and actively seek medical examination and treatment.