[DoctorBeaver (OP)]

We have taste buds that are receptive to different tastes, rods & cones in our eyes that are receptive to different colours. Do we have different pain receptors for different types of pain? Do we just have 1 type that reacts differently to different stimuli?

I ask because I've pulled a ligament in my elbow and it's a burning pain. I sometimes get the same kind of pain in my back due to a long-term injury. But I also get a dull ache in my back at times, a totally different type of pain, but caused by the same injury.

[RD]

Nocioceptors: receptors which respond to potentially harmful stimuli.

http://www.gp-training.net/rheum/pain.htm

http://en.wikipedia.org/wiki/Nociception

[DoctorBeaver (OP)]

Those links would be good if I could understand what's on the pages  []