How long it takes to pass the danger period after craniotomy varies from person to person and from condition to condition. For example, if an intracranial hematoma is caused by a traumatic injury, and there are no other physical complications after craniotomy, the danger period can be passed quickly, usually in 3-7 days. However, if the patient has a combination of hematologic disorders that can easily lead to rebleeding. In this case, the risk period will be significantly prolonged, because the bleeding can occur again until the patient is completely healed. The above information is for reference only. Please refer to the doctor’s consultation for specific medication and treatment.