How can I get it across to my parents that I really need help?

Honestly, the best thing to do is be completely honest and as upfront as you can be. Be serious with them and get them to listen to you and see that you are serious about getting some help. Tell them you want their support and you really need them to be there for you. Just confront them, it's the easiest and most likely to be effective. Good luck! :) - Oh! Also make sure you tell them how you're feeling, as hard as it may be.. give them reasons and tell them about all thats been going on in your head. Tell them you're trying to talk to them and get them involved and as their jobs as parents they should listen and hopefully help you find the help that you need and desire

honestly just keep telling them until they listen and if they don't listen go to another family member like a brother or sister aunt or uncle or a grandparent but Please don't harm yourself that is never the answer remember PAIN IS TEMPORARY SCARS ARE PERMANENT

If your parents are neglecting your health, approach your school counselor or independently look up a mental health clinic. Consultations are free, and you can at least get pointed in the right direction that way.

Check yourself into a mental health hospital. If your town has a crisis centre, go there and they can, for lack of a better word, hook you up. Your parents don't need to know until you're in the waiting room at the hospital and then legally they can't take you out if your mental and physical health is at stake. Also, call a crisis hotline or a Child and Family centre and if you're over the age of 12 they legally don't have to tell your parents ANYTHING you tell them, unless you're confessing abuse or the desire to kill yourself or others. Stay strong lovely, hope everything works out for you. <3

Can I just add in light of the previous comments, well done for even having the courage to express to your parents that you need help. It takes a lot of guts to get help and especially to seek it from your family. Stay strong and don't let others get in the way of you getting better. *hugs*

Tell them what's wrong and then the might let you go to therapy if not just keep asking them, that's how I got an iPhone

It is very difficult to express what you are going through, especially to your parents. You may want to go through other channels. I don't know if you are in High School or college or what but every school has a counselor. It may be beneficial to meet with the counselor and let them know. The counselor would be able to help you get through to your parents and even make recommendations on therapists that could help.