We describe three middle-aged and previously healthy patients in whom idiopathic spontaneous subdural hemorrhage occurred, giving rise to headache with minimal or no neurological signs and resolving with conservative management. Previous reports of this condition describe an associated severe neurological impairment, a poor prognosis, and a necessity for surgical evacuation. Our cases indicate that mild and self-limiting spontaneous subdural hemorrhage may occur and is perhaps underdiagnosed in our patients' age group because it presents non-specifically with headache.
