PTSD: Can symptoms really last decades?

I suffer with ptsd low moods depression and anxiety because of all the trauma in my younger years, being a coeliac, and the bereavement of my mum having to look after her for 6 months while having to hold down a full time job, and looking after my family, and with dad falling to his death from his mental hospital window and me having to identify his body , also having breast cancer, plus all my other illnesses, it's hard and it still is today plus when I was young the bullying was hard to cope with as I couldn't tell my mum as she had enough coping with my dad being in a mental hospital for 28 yrs, and it was hard for me going to the mental hospital to visit him at the young age of 4 and seeing things going on with him, in straight jackets etc seeing nurses carrying ice in large baths hearing patients screaming, and shouting seeing women in there with teddy bears in there arms, and seeing my dad after having ect Treatment it's been really hard trying to cope with it all especially being raped at 17 that's why I suffer now from ptsd low moods depression and anxiety and I am 71 I have been on all kinds of medication, and still am today this is my mental health story, now I have loads of life threatening illnesses, and I am still trying to cope with going through a mastectomy not feeling like a women anymore, plus having osteoporosis, being deaf in both ears, glaucoma, and suffering from lymphodema in my left arm and copd and emphysema it's hard but life goes on but sometimes I just burst into tears but at least I am alive there are a lot of people that are worse off than me,

Yes it can last decades as I've had my PTSD for 15 years and anything that happens violently either beside me or outside triggers it and it's hard to deal with

My traumatic life situations are being penalised by horrid people who pretended to be good friends but really were utterly toxic some of which have induced extreme flashbacks and really bad anxiety and depression one of my carers who support me with my mobility issues describes such relationships as opportuniscix and unbalanced. They involve them asking for a heck of a lot of money of which they have not reimburse. I don't know why I was so very gullible and easy prey.

Another traumatic life event is my dad's death and losing my mum and sister and lots of decent friends like my friend Matthew who died of arrhythmia and my best friend Roger who died of a heart attack and a stroke aged 82. I still have a very nice nephew who I am very grateful for.