A 32-year-old woman presented with low pressure headache 3 days after delivery 
of her baby. An assessment of postdural puncture headache was made. This was 
initially treated with analgesia, caffeine, and fluids for the presumed 
cerebrospinal fluid (CSF) leak. The woman was readmitted two days after her 
hospital discharge with generalised seizures. A brain scan showed features of 
intracranial hypotension, and she was treated for CSF leak using an epidural 
blood patch. Her symptoms worsened and three days later, she developed a left 
homonymous quadrantanopia. An MRI scan confirmed a right parietal haematoma with 
evidence of isolated cortical vein thrombosis (ICVT).