Any explanations?

Is normal to feel like you wanna cut open your chest because something inside is itching? And like sometimes, once in a while my head gets this weird, aching feeling; almost Iike a headache but it prevents you from thinking. I thought I've gotten over this but I guess it comes back from time to time. Entire body feels weird this time, like an itching pain is all over on the inside. And I just have this urge to let it out in some way. Even if it's by shouting but my energy is so low, it's like I can do it. No matter how much I eat or sleep I would always feel this way and I'm tired of it. Then I get this scared feeling like I can't be outside. I know at this point I need help but I don't want to talk to anyone, honestly being anonymous feels better.

Some days I feel empty inside and others, I feel like there's something inside that needs to get out.

-- shared this post some time ago when the urge was strong but didn't get any explanation for it.