Case of the Month #41 Posterior Reversible Encephalopathy Syndrome (PRES)

PRES is a clinico-radiological syndrome initially described in 1996 [2]. It is being increasingly recognised due to advanced imaging techniques [3]. 

It affects all ages, with a mean age of 45 years.  Women are affected more often than men [4]. 

There is a vast range of clinical features. The most common are: 

• Hypertension (up to 80%) 
• Seizures 70% 
• Headache 50% 
• Visual disturbance 35% 
• Focal neurology 10% [1]