The pain cycle, what is involved?

Pain starts from activation of the nervous system. There are 9 steps of the pain circle:

Step 1: Local inflammation. Anything causing tissue damage such as injury, surgery, or infection can lead to local inflammation. This is the origin of the pain.

Step2: Peripheral sensitization. Local inflammation irritates the nerves lowering the pain threshold causing peripheral sensitization.

Step3: Central sensitization. Nerve signals are transmitted to the brain causing central sensitization.

Step4: Pain sensation. The brain tells you that there is pain in the body somewhere.

Step5: Pain cognitive processes. The brain where is sensing the pain connects other part of the brain where controls emotion causing emotional and behaviour changes.

Step6: Depression and anxiety. The brain where controls emotions is affected by the pain signals and alters its function causing depression and anxiety

Step7: Cortical reorganization. The brain reallocates its task to different parts of the body to reduce pain sensation and help replace the lost function.

Step8: Avoidance and disability. The body will respond the brain demands to redistribute the work causing avoidance and disabililty.

Step9: Muscle spasm deconditioning. Injured and related muscles become spasmed to protect the body from moving and feeling the pain causing muscle waste.

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