In the atrophic brain especially in the elderly ,development of the spontaneous subdural hematoma provoked by CSF drainage procedures, which causes intracranialhypotension. Nontraumatic spontaneous chronic subdural hematomas may occur from different pathologies in predisposed population including being older than 65 years, using an anticoagulant agent, coagulopathies, alcohol abuse and the procedures leading to CSF overdrainage, such as lumbar puncture, external ventricular drainage, ventriculoperitoneal shunt, and also iatrogenic injuries to the duramater and arachnoid during spinal surgery would lead to CSF leakage from the wound site and may result in either meningitis or intracranial subdural hematoma. In this article, we describe the occurrence of a subdural hematoma and it's spontaneous resorption following spinal surgery procedure.

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