[Clinical forms and prognostic factors of chronic subdural hematoma in the adult].

The most common clinical signs for chronic subdural hematoma in adults are: motor weakness, increased intracranial pressure, confusion and loss of consciousness. This pathology is more frequent in the elderly over 65 years, the diagnosis also being more difficult in this case. Some misleading clinical presentations may delay the decision to perform a CT scan to assess the diagnosis. Preoperative headaches and isodensity in CT-scan are features of good prognosis. Chronic alcoholism and postoperative pneumocephalus are related with poor prognosis.