Traumagenic

Traumagenic refers to a system whose creation was the result of one or more traumatic events. Often, these systems have lingering trauma, and may fall under a diagnosis like DID or OSDD-1.

Related Terms
Endogenic is an umbrella term for all origins that are not traumagenic, and mixed-origin systems may contain members created from trauma, but not exclusively. Traumagenic falls under the Adaptive collection of labels, or systems that were formed to handle external forces.

Credits
The word "traumagenic" has been used in different contexts. In psychiatry, traumagenic generally refers to anything, well, originating in trauma; specifically in the realm of medically-recognized plurality, traumagenic is contrasted with terms like iatrogenic (caused directly by a therapist or other treatments) and pseudogenic (caused by a patient, a lie spiraled out of control). In this context, traumagenic is only referring to DID, and trauma happening at a certain age, and the latter two terms are often used by "DID debunkers", so they are not to be used in a casual way.

Further on, traumagenic has been reworked by the wider plural community to mean any sort of trauma causing any sort of plurality. Regardless of diagnostic status, age of which trauma happened, or perceived severity of trauma, the label encompasses much more than the original meaning did. (See this great post discussing the differences.) The more recent definition and the coiner's (Trash Can Collective) later opinions can be found in this video.