Uh, I have it. Only in my country, we don't call it disorder. Just PTS. Still, it is still bundle of letters. It sounds clinical. "Trauma issues" is a way to express to normal people what it is without going into a thesis. Most people do understand what trauma is, what it can do and that it changes you.

And the PTSD is pretty new thing. It used to be shell shock. Then the name changed few times until it because clinical, cold and meaningless.

Roman clergies in Rome do not have degrees in psychology or psychiatry, do they? And if you used to the abreviation to somebody who is not English speaker, they might be honestly unfamiliar with that word.

(also, in Europe there is slightly different view of mental "illness". Czech uses term for it that can be losely translated as "soul disorder", as in it affect the spiritual, the non-touchable, the psychological part of you. Not so wild on brain scans and "chemical imbalances"). Not sure about Italy.