Could I ask why Criterion H exists? From how I understand it, I feel as if there is a genuine belief that your life is in danger, I'm not sure how the brain would differentiate between an actual traumatic event and a perceived event.
To be honest, science is not entirely solid on this, yet.
But, criteria exist to try and render diagnoses as specific as possible. Why? It helps the science and research and treatment protocols to evolve in an organized fashion.
..."threat to physical integrity” was removed from the definition of trauma in the DSM-5. Medically based trauma is now limited to sudden catastrophe such as waking during surgery or anaphylactic shock. Non-immediate, non-catastrophic life-threatening illness, such as terminal cancer, no longer qualifies as trauma, regardless of how stressful or severe it is ...
source: PTSD in the DSM 5: Controversy, Change, and Conceptual Considerations
So, is this just the APA deciding that medical trauma (because I think that's more along the lines of what the OP is describing) doesn't really matter?
No. It is committing to a narrower and more specific definition of trauma. Post-Traumatic Stress Disorder must be, by definition, caused by a traumatic event. And that event is sudden, shocking, catastrophic.
Adjustment Disorder is more likely to be the textbook answer to your situation,
@waterv1. When the DSM 5 created the category of Trauma and Stressor-Related Disorders, and located PTSD there, it was joined by two other diagnoses - Acute Stress Disorder and Adjustment Disorder.
ASD is very time-limited. AD is less so. From everything I've read, in terms of differential diagnosis among the trauma and stressor disorders, adjustment disorder is recommended as the next diagnosis to look at, when someone is presenting with sub-threshold PTSD (in other words, something that looks a lot like PTSD but doesn't quite meet all the criteria sufficiently, and/or has an exclusion.)
You might find this article interesting:
Adjustment Disorders: Practice Essentials, Background, Pathophysiology
And, this one talks about the issues and controversies surrounding the re-classification of AD:
Adjustment Disorder: Current Diagnostic Status
Finally, this is a very readable article on the different ways adjustment disorder presents.
Adjustment Disorder Symptoms and Their Effects - Adjustment Disorder - PTSD and Stress Disorders | HealthyPlace
I would not be discouraged by the sense that adjustment disorder is for 'lesser' traumas. Sometimes people seem to have a strong reaction to that idea. And that's really not the point. The point is, there's a broad spectrum of highly stressful events that can have severely impairing effects on people's lives. AD encompasses a big chunk of those, currently.
One article I read dealt specifically with cancer diagnoses, and how they have shifted over time in the ways they address the stress impact of having such an impactful medical event. AD is now part of the oncologists' understanding of how to classify patient reactions that were previously considered a pseudo-form of PTSD (ca-PTSD, or cancer PTSD).
Anyway - I hope something in here might help.