Absolutely. I have PTSD, and I really fight when I feel that I am being manipulated by anyone. I am having that fight at this moment, in fact.
I changed from my phone company, which I despise, to my ISP, who now sells and bundles phone-Cable TV - and internet for one low price. I called, and the rep quoted me a very nice price, no installation fee, and told me how much the bill would rise to after the one-year low price. I agreed to that price, and we made a verbal contract on a recorded line.

Now that the company is here on my property, there is suddenly a cable modem to rent, the prices are higher and the cable company is changing their mind on the nice price I was quoted on the phone. I am fighting because they manipulated me into buying services from them at one price, then changed the price to a higher one after the fact.

Of course, this happens to people who don't have PTSD, but this kind of thing makes me rabid. Nobody likes to be screwed. I, however, have a constant fear that people are trying to harm me because of my trauma. People whom I was supposed to trust and rely on for my life abused me in terrible ways fro many years. Now, I expect people to harm me, companies to screw me, and bad things to happen.

That's why I was initially glad that the cable company's phonecall was recorded by them, and they have agreed to credit my account for the amount in dispute for one year. We have yet to straighten out the dispute about how much the services will cost after those 12 months. I am not giving up.

But my blood pressure is higher because of this, and I am angry and my mind is going over every time in my life that I have been screwed. I want a drink, but I should not go down that road because everyone in my family is an alcoholic. I need to relax, but I can't. This is the life of my PTSD. I am fighting, stomping around and snorting like a bull in the ring, just begging for a matador from my cable company to walk into the ring so I can crush him for lying to me.

You are thinking, the easy thing would be to cancel and go back to my old phone company. But I can't do that easily because now, there are charges to change phone companies, and if you think the cable company is a liar, try Qwest Phone company! They are true criminals.

So yes, we PTSD people do have low tolerances for any sort of manipulation.