Intracranial hematomas are classified as supratentorial and infratentorial hematomas according to their location and source; according to the location of the hematoma, they can be classified as epidural hematomas, subdural hematomas, and intracerebral hematomas. Epidural hematoma, hematoma accumulates between the dura mater and the skull; subdural hematoma, hematoma accumulates between the subdural mater and the soft meninges; intracerebral hematoma, hematoma accumulates within the brain tissue; according to the time of classification, if the hematoma formation time is within 3 days, it is known as acute intracranial hematoma; if the hematoma formation time is between 3 days and 3 weeks, it is known as subacute intracranial hematoma; if the hematoma formation time is more than 3 weeks, it is known as chronic hematoma. or more, it is called a chronic hematoma.