Dissociative neurological symptom disorder, with visual disturbance

**Definition:** Dissociative neurological symptom disorder, with visual disturbance is characterised by visual symptoms such as blindness, tunnel vision, diplopia, visual distortions or hallucinations that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.