How would you feel if you were paralysed or had blackouts, only to be told you were imagining it, hysterical, or making it up? This is still the experience of some patients with Functional NeurologicalDisorder (FND), a very real but misunderstood condition that affects 15% of UK neurology outpatients. In spite of being relatively common, FND is remarkably hidden from public view. Dr Jon Stone, consultant neurologist at Edinburghs Western General Hospital, brings this illness out of the shadows. Hear the science and lift the stigma.