Yes. I have had chronic costochondritis that started as a teenager almost 50 years ago. Nothing more painful than a bad flare up. I also have trouble chewing and swallowing although I’ve never read that swallowing is connected. Both of those issues are thought to be caused by my rare hereditary neuropathy with pressure palsies. Do you actually have trouble swallowing or is it just too painful to swallow during a flare up? Do you have a specific question about it all? What causes your costochondritis to flare up?