A 90-year-old woman developed chronic subdural hematoma with impaired consciousness. Due to a history of dementia, she had not recognized her family and had wandered. Since they could not have cared for her at home, they had had her enter a nursing home. The daughter was informed at ER: “The surgery for chronic subdural hematoma is straightforward with minimal risk. We can expect positive outcomes, meaning she could return to her previous state, but her dementia will likely worsen. If you choose conservative therapy, she is unlikely to regain consciousness. However, given her advanced age and severe dementia, non-surgical procedure is also an option.” After consulting with other family members and deliberating, the daughter requested surgery. The procedure concluded as scheduled; it was an extremely simple technique with no complications. Postoperatively, consciousness was restored. The family rejoiced. “She doesn’t recognize me as usual.” she remarked.