Answer:
AMS is secondary to issues that effect the whole brain while FND's are secondary to damage to a very small/local areas of the brain.
Step-by-step explanation:
FND stands for Functional Neurological Disorder. It is a condition where an individual experiences any neurological symptoms like blackouts, movement disorders, sensory symptoms, weakness or numbness. The brain starts functioning improperly in a person suffering from functional neurological disorder.
AMS affects the whole brain while FND affects a small part of the brain.
Thus the answer is ---
AMS is secondary to issues that effect the whole brain while FND's are secondary to damage to a very small/local areas of the brain.