Hyper vigilance - that is PTSD. Suffering would be adding stuff on top of hyper vigilance.
Therapy and medication. I don't take anti-depressants. I take Prazosin, which is a high blood pressure medication, that is for nightmares, Gabapentin for sleep along with a antihistamine - cyproheptadine - for sleep. Therapy really helps have someone to talk to because my trauma is not over. The perpetrator is still in my family's life. Buddhism helps me to drop it after I'm done talking about it rather than ruminating about it.
I don't have hyper vigilance anymore and I attribute that to sticking with therapy for 30 years. It takes long time.