Hi there. Extreme sensitivity to skin and heightened painful response to pressure could be due to fibromyalgia, post herpetic neuralgia caused by shingles and chicken pox. Certain other conditions which cause the skin painful to touch are chronic fatigue syndrome, deficiencies of vitamin B1, B2, B6, migraine, and tactile defensiveness. Tactile defensiveness is caused by midbrain defect.
Post spinal fusion may be responsible if certain nerve roots are damaged or entrapped. A nerve study would be required. A pain physician consultation would help in treatment options. Take care.
I have a gluten sensitivity. I react this way for 2 to 4 days after eating gluten.