Causes of leak through the dura include head, brain or spinal surgeries, head injury, tubs for epidural
anesthesia or pain medication
and a
spinal tap. Symptoms are headache made worse with sitting
and better on lying down, associated light sensitivity and neck stiffness, drainage of csf from ear or nose. Certain investigation includes CT head, MRI head, radioisotope test of the CSF to track the leakage. Consult a neurologist for best advice. Take care.