Chronic subdural hematoma

Chronic subdural hematoma is a symptom that appears 3 weeks after the trauma. It is located between the dura mater and the arachnoid membrane and has an enveloped hematoma. Most head injuries are mild, part of the history of trauma is lacking, the onset is slow, no characteristic clinical manifestations, early clinical symptoms are mild, and the symptoms quickly worsen after a certain amount of hematoma. Clinically, it is easy to be misdiagnosed as intracranial before confirmed by imaging Tumor, ischemic or hemorrhagic acute cerebrovascular disease. The time from injury to onset is usually 1 month, with 34 years reported in the literature.

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