There is no authoritative information on how many days it usually takes to recover from a lacunar cerebral infarction. It may generally take anywhere from 2 weeks to 6 months, varying from person to person, and in a few cases, recovery may not be possible. Cavernous cerebral infarction is the occlusion of the lumen of a small perforating artery deep in the cerebral hemispheres or brainstem, creating a small infarcted lesion. Due to the small foci, patients with lacunar cerebral infarction may have no obvious clinical symptoms, and those who have symptoms may show mild hemiparesis, dysarthria, ataxia and so on. The symptoms of lacunar cerebral infarction can be recovered in 2 weeks to 4 weeks in general, and those with obvious symptoms, combined with the later rehabilitation treatment, can return to normal within 6 months, while a few of them may have some symptoms left behind and cannot return to normal completely. The prognosis of lacunar cerebral infarction is good, but it is prone to recurrent attacks, therefore, it is necessary to go to the hospital in time and cooperate with the doctor for active treatment, so as to avoid delaying the condition.