I have had pain running along my diaphram , under my ribs and throbbing from my sternum. This area also swells and goes down. Pain, nausea and sickness- as well as a weird 'hollow' feeling are the main symptoms. I rang my rheumatologist help line to see if it was part of PSA. They said no idea! So I went to my GP who said it was inflammation. I'm seeing a specialist in Sept. Has anyone else experienced this? Google search seems to indicate it could've part of PSA?