1 Introduction Functional cognitive disorder (FCD) is the cognitive subtype of functional neurological disorder (FND) [1]. The term is used to describe cognitive symptoms that are persistent and distressing and whose distinguishing feature is the presence of internal inconsistency [2]. FCD accounts for up to a quarter of patients attending memory services [3] and is also common in other medical conditions such as chronic fatigue syndrome, fibromyalgia and irritable bowel syndrome [4].