We become numb when there is short supply of blood to some parts, as mentioned here.
If that is the reason, why don't neurons and other cells die at that part if they don't receive oxygen and other things needed?
We become numb when there is short supply of blood to some parts, as mentioned here.
If that is the reason, why don't neurons and other cells die at that part if they don't receive oxygen and other things needed?
A lower supply of blood does not mean no supply of blood, so my guess is there's generally enough to keep stuff alive for some time. But if the supply is restricted for long periods (think frostbite), then stuff starts to die.
Also, the sensory neuron endings in the skin are normally just one long projection from a cell body, the major components of the neuron are protected by being located in e.g. The Dorsal Root Ganglion.
Simply put, the cells and "other stuff" WOULD die if the blood flow and/or oxygen were too severe, and would be cut off for too long.
It would probably take some time though.