Hi Pippo, welcome to PC!

It sounds a lot like possibly going into shock...or acute stress disorder (had 2 look that second part up ).

Shock: Causes, Symptoms and Diagnosis

“The term “shock” may refer to a psychologic or a physiologic type of shock. Psychologic shock is caused by a traumatic event and is also known as acute stress disorder. This type of shock causes a strong emotional response and may cause physical responses as well.”

Maybe being prone to dissociation plays into this too? I don’t know, I’m not an expert. Maybe you and your T can look into this?

Good luck anyways.

(Sorry about the link- just giving credit where credit is due)