Individuals affected with FD are incapable of producing overflow tears with emotional crying. Frequent manifestations of FD include inappropriate perception of heat, pain, and taste, as well as, labile blood pressures and gastrointestinal dysmotility. Other problems experienced by individuals with FD include excessive sweating, dysphagia and vomiting, aspiration and frequent pneumonia, speech and motor incoordination, labile blood pressures (episodic hypertension and postural hypotension), poor growth and scoliosis. Yet affected individuals usually are of normal intelligence. FD patients can be expected to function independently if treatment is begun early and major disabilities avoided.