If sensory part of median nerve is dead, will i lose functionality which i still have. and does a dead nerve rot in the body requiring amputation?

Complicated question: The sensory part of a nerve only controls sensation - it feels numb. The motor part (moving muscles) should be intact, so you have functionality (for now). A dead nerve ultimately leads to problems - you don't sense trauma or pressure, so you can repeatedly injure a body part w/o knowing it & the sore can get infected. Over time, chronic infections set in bone, requiring amputation. HealthTap Prim