Absolutely. I can only speak for myself, of course.
I have had C-PTSD responses that have manifected in various ways in varying degrees throughout the course of my life. In the time when they were absolutely the worst, and at this point I already knew that I had some kind of PTSD, I still treated these responses individually as individual problems.
I self medicated, like a lot of us. I took a lot of anxiety medication, illegally, although if I weren't so afraid of doctors I surely could have gotten it legally. I drank. I drank with said medication *intentionally* to forget. I took antacids. At one point I had an overdose on antacids. I didn't even know that was a thing. My self-medicating was also a problem, although I wouldn't have recognised it at the time.
When people asked I would have listed these possible disorders separately. For example: I had severe social anxiety, insomnia, I was depressed, I thought I was sociopathic, I had and still have the physical effects of childhood trauma, autoimmune diseases and I get physically ill when I am upset. Looking back now 20 years in the future, I know that no amount of anxiety medication would have solved my problem. No amount of antacids could have solved my problem. I was never sociopathic, although certainly depressed. I know now with certainty that most of my problems were based in childhood trauma, because I don't have those symptoms to the same extent now and I don't medicate. I can see looking back how they fit together. I was depressed because my life was depressing. I was sick because my life was sickening. I was anxious because I felt I had to live in fear to survive. I thought I was sociopathic because I couldn't relate to other people's feelings and I thought the only way to survive was to play life like Chess... and possibly the self-medicating didn't help with that either.
At least for me, my childhood trauma and C-PTSD were the root of several other disorders that were/are absolutely real. I feel I have to disclaimer that, because I have had doctors tell me things are somatic as if that means they don't exist. They do exist. It's just the shadow of the monster. Trauma was the real monster.