Going through intense emotional distress and for the lack of vocabulary and validation to address your emotional pain, you start exhibiting it physically.
Why The Pain
There is a constant relay of somatosensory information from limbs to the spinal cord.
The Connection
If your body is a kingdom, think of thalamus as the watchtower guard which tells it when you need to run when you see a predator.
Role of Thalamus
Are you experiencing any physical pain that doesn't have a medical explanation?
With somatoform disorders, the anterior cingulate cortex is running in an overdrive trying to tell you that there’s pain in the body – even when there isn’t