I was bullied to the point I got PTSD and severe depression. My parents think it's irrelevant to go to therapy for something that happened four years ago. So what do I do?

Do not undermine the aftermath of what bullying can be done to your life. Bullying can cause serious issues following the act being carried out. Examples are like the ones you have pointed out (PTSD and severe depression), eating disorders, and anxiety. I would urge you to seek help in finding closure to the matter. Take good care of yourself!

Bullying can affect you for the rest of yourlife. And you are the only person who can decide if you need therapy or not.

Try and make your parents understand that bullying is very serious and will leave very traumatizing emotional scars. Severe depression and PTSD is serious and should be treated as soon as possible. If your parents still don't think you should see a therapist about bullying, then try and get them to let you see one for your severe depression and PTSD (since you have that currently, then they might let you). Then if they let you see a therapist, then you can tell the therapist everything that happened and how it's bothering you. They keep everything confidential, so if your parents won't believe that the bullying isn't bad, then they won't have to know.

Therapy is relevant whenever you're struggling and want/need support. It doesn't matter if the events happened four years ago, or four decades ago. The sooner you can get help for PTSD and depression, the better. If your parents are unsupportive, it might be worth exploring other options, such as seeing a school/college/uni health service. Even if they're unable to help you, they should be able to refer you to someone who can. You did the right thing by asking for help. I know it can be disheartening, but keep asking until you find someone who gets it. You don't have to go through this alone.

if you believe therapy will indeed help you, go for it! it doesnt matter if it happened 4 years ago or 4 days ago. talking about it to someone may actually help you. dont let your parents make the decision for you. you know what is best for you! best of luck!

Educate your parents about PTSD, as well as the often long-lasting effects of bullying. It sounds like they do not fully understand what you are experiencing. After you educate them you might have a more honest conversation about the merit of therapy.

Explain to them that you are suffering now no matter what the cause was or when it happened, and you need help. Try getting a teacher or other adult to explain it to them if you can.

PTSD is neither irrelevant nor insignificant. Even though it's been a while since the incident, not having any way to process that trauma can be damaging and detrimental to both mental and physical health. If you are in a position to seek therapy, and you feel it will improve your quality of life, it never hurts to try.

You know yourself. Better than. Your parents. Know you and if you feel that you need professional. Help to overcome the PTSD and depression. Then you should push to see a therapist..

seek help from friends. It isn't irrelevant to be fair because it can be a reoccurring theme and bullying someone impacts that permanently.