Is a chronic subdural hematoma detected by ct scan important or just a normal occurance in a 83 year old that hit head 3 days prior to scan?

Chronic > 3 days: "Chronic" means that the bleeding began a few wks after injury. Thus, it is less likely that the hit to the head 3 days prior to the head CT caused the "chronic" subdural hematoma (SDH). SDH and head trauma are risk factors for seizures and other conditions. The patient should be closely monitored and see a neurologist for evaluation. http://www.nlm.nih.gov/medlineplus/ency/article/000781.htm