Forget blood tests, go to the optician!
Patients with neurological symptoms or signs such as new pupil abnormalities, eye pain, cranial nerve palsies, nystagmus, visual field defects, tinnitus, paraesthesia or neuralgia should be screened for B12 deficiency."
Patients with neurological symptoms or signs such as new pupil abnormalities, eye pain, cranial nerve palsies, nystagmus, visual field defects, tinnitus, paraesthesia or neuralgia should be screened for B12 deficiency."