Psychosis and psychogenic polydipsia in CV2/CRMP5 antibody‐related PLE

This case report expands the reported range of clinical presentations of CV2/CRMP5 antibody‐related syndromes with two novel findings (manic psychosis and psychogenic polydipsia). A systematic literature review highlights a potentially higher incidence of psychosis than previously reported, clinical features that should prompt antibody testing, and the potential for treatment response.