10th September 2020

A 39-year-old gentleman presents with a 7-day history of progressive symmetrical paralysis of his lower limbs

A 39-year-old gentleman presents with a 7-day history of progressive symmetrical paralysis of his lower limbs. He is unable to mobilise anymore and is extremely concerned. Apart from some bilateral paraesthesia of the feet and hands that started 7 days ago, he has no other sensory symptoms. Three weeks ago, he suffered from a bout of gastroenteritis. He has no significant past medical or family history. On examination of the lower limbs, he has areflexia and 0/5 power bilaterally. Upper limb neurology is normal. 

Lumbar puncture reveals elevated protein.

You order spirometry testing which reveals a vital capacity of 2100ml. 

For the patient above, please select the SINGLE most likely diagnosis. Select ONE option from the list above.