Corposcindosis ("CS") is a term by author Alexander Baker, who underwent ETS surgery for "hyperhidrosis" in 2002, and experienced a myriad of changes to his bodily system. Although many other studies prior and since report individual aspects of this form of nerve damage, CS collects and integrates the knowledge into a unified original theory.

The new term "coproscindosis" has now been adopted and does appear in the literature, for example appearing with the definition in surgeon Pascal Dumont's 2008 article "Side Effects and Complications of Surgery for Hyperhidrosis".

Corposcindosis (split body syndrome) is an autonomic neuropathy in which sympathetic nerve function has been divided into two distinct body regions - one paralyzed, and the other still functional and potentially hyperactive.

In lay terms, CS is what happens when you have a thoracic sympathectomy, known as ETS surgery. The surgeon destroys part of the sympathetic chain, and afterwards, many organs, glands, muscles and nerves do not work the same as they did before. Understanding, predicting, and reporting on those changes is the purpose of this work.