What physiological mechanism is responsible for referred pai

What physiological mechanism is responsible for referred pain?

Solution

Answer) For the time being, there is no specific single proved mechanism behind referral pain. some of the proposed mechanisms are explained below in the brief;

a) Convergent-projection

it proposes that there is a convergence of afferent nerve fibres onto the same spinal neuron from tissues, and that is how referred pain can be seen as segmented as the spinal cord segmentation.

b) Convergence-facilitation

According to this theory, internal organs were supposed to be insensitive to the stimuli. also, the inputs which are the non-nociceptive afferent to the spinal cord could create \"an irritable focus\". such change might lead to some stimuli for perceiving the referred pain.

c) Axon-reflex

This theory suggests that there is a bifurcation of the afferent fibres before they are connecting to the site of the dorsal horn. such fibres are present in the skin, muscle, and intervertebral discs. such Axon-Reflex might result in referred pain.

d) Hyperexcitability

According to this theory, there is no central mechanism for referred pain. only central predominant characteristic of referred pain is the sensation beginning minutes after the stimulation of the muscle. that is how the referred pain is perceived in a deviated field than the field of stimulation. such receptive fields might have arisen after the latent convergent afferent fibres are opened in the dorsal horn.