I am a very inflammable (inflammed? not sure the terminology) person - allergic to pretty much everything, ezcema, IBS. I've been to specialist doctors for all

I am a very inflammable (inflammed? not sure the terminology) person - allergic to pretty much everything, ezcema, IBS. I've been to specialist doctors for all these things and they've mostly basically told me to go fuck myself ("You have IBS, can't help you there. Be grateful it's not cancer. Next patient!") Anyways, the finger prick thing kind of intimidates me but I think this is exactly what I need!