Abstract
Four (two male, two female) cases of chronic subdural hematoma (CSH) found in demented patients were reported. Out of the two male cases, one had been chronically a heavy drinker, the other had suffered from head trauma several months before. As for two female cases, one had been found to have subdural fluid colleciton ahead of CSH, the other had once suffered from CSH. Clinical signs seen in these patients of CSH were disturbance of consciousness, or mono-and hemiparesis, or incontinence. Most of their family members had misunderstood these signs of CSH as an aggrava-tion of dementia. In the clinical assesment of patients with dementia, we have to be more careful not to miss those clinical signs, even though the patients can not tell us any symptoms. And we should practice examination of imagings of head (CT scan or MRI) as early as possible, when the presence of CSH in suspected.
