Subarachnoid hemorrhage and pneumocephalus due to epidural anesthesia

Pneumocephaly occurring after epidural block is usually caused by either dural puncture or loss of resistance technique using air. [...]CSF can be immediately seen, when dural puncture is achieved [20]. Postdural puncture headache (PDPH) is the most common complication following epidural or spinal procedure. Because most physicians now use fine spinal needles, these headaches have become less common. [...]it should be taken into account that subarachnoid hemorrhage and pneumocephaly may develop following epidural anesthesia, even rarely.