What is it called when you itch-hurt-pluck or otherwise cause a sensation to part of your body and feel twinge-reaction-phantom in totally different body?

The phenomenon you are describing is called referred pain. It occurs when a painful sensation is felt in a part of the body that is different from the source of the pain. For example, you may feel pain in your shoulder when you have a heart attack. This is because the nerves that supply the heart and the shoulder are connected in the spinal cord. When the heart is in pain, the pain signals travel through the spinal cord and are interpreted by the brain as coming from the shoulder.

Referred pain can be caused by a variety of conditions, including:

* Heart disease

* Lung disease

* Gastrointestinal disease

* Musculoskeletal disorders

* Nerve damage

If you are experiencing referred pain, it is important to see a doctor to determine the cause of the pain and get the appropriate treatment.