If your MRI is “normal” but your body isn’t, FND might be the missing explanation. Functional Neurological Disorder (FND) is a real brain based condition where movement, sensation, speech, gait, or seizure like episodes malfunction without structural damage on routine scans. It’s not “faking,” and it’s not “just anxiety.” In neurology clinics it’s a top reason for referral (often 5 to 10% of new visits). What research supports: • Network disruption linking emotion (amygdala), salience/interocept