Eczema Treatment Care

I have been told by My Dr that something I have been in contact with has produced this horrible rash. I have wracked my brains as to what I have been in contact with! Dr has given me Canesten Hydrocortisone which just made it irritate, then Daktacort ointment which didn’t work, still irritates like hell. I am using Oilatum Emollient cream and wash He did say it could be coming from within meaning a virus in my body. Has anyone ever experienced anything like this the itching is driving me mad and I look like i’ve been in a fight, its also at the sides of my nose at the very top. Any ideas please.