Most patients with functional or dissociative symptoms have more than one symptom. Experiencing lots of different symptoms at once can be a particularly baffling feature of these illness for patients.

In this section I’ve divided up the core symptoms of FND from other common associated symptoms like pain and fatigue that people with FND often get. Usually all of these symptoms are best seen as part of one illness rather than interpreted as multiple illnesses, but they are labelled differently. So for example chronic pain is not defined as part of FND.