The shutting down of emotions can be an effect of the ptsd. There's the hyperarousal of getting constantly vigilant and constantly emotional, then there's the other end of the spectrum with an almost complete shutting down of emotions.

according to my t, it's possible to go back to the original, more lively state once the ptsd is treated. I guess it's all a spectrum of stuff. I had been really stoic growing up, and even into my early adulthood. Now I get weird bursts of random emotion. T says that's a good sign; she says the emotion is appropriate to the situation. I dunno. I have no real memory of ever being a fully emotional creature. It's only ever been numb or sad... it actually really pissed am ex off. I never got jealous or worked up over anything she did. She said I must not care because I never reacted. Sad part was that I cared a lot, but was too numb to show it.

Anyway, according to my t,it's possible to break free of the numb/stoic state.