Note that underneath these situations there could be pain possibly with no stimulus or with an extremely gentle, non-tissue-detrimental stimulus. Nothing at all is thought regarding how these stimuli activate nociceptors. The nociceptive nerve endings are so small and scattered that they are tough to find, let alone examine. https://proleviate-nature-s-pain55431.ivasdesign.com/51786381/everything-about-what-are-pain-receptors