Eczema & stomach problems - Dairy Wheat? Diet?

I am 27 years old. I have had terrible eczema my entire life, asthma since 15 and stomach problems gradually getting worse over the past few months? Can these all be related? Is it common for dairy, wheat, ...or anything to make these worse or have caused them? I'm at wits end with all them. They all seem to be... show more I am 27 years old. I have had terrible eczema my entire life, asthma since 15 and stomach problems gradually getting worse over the past few months? Can these all be related? Is it common for dairy, wheat, ...or anything to make these worse or have caused them? I'm at wits end with all them. They all seem to be getting worse and my prescription meds for them (Triamcinolone, Protopic, Olux-E, Advair, Albuterol and occasionally Prednisone) do not seem to be controlling them anymore...I really need some answers from people who have experienced this 1st hand or a doc or nurse. Should I be on a dairy/wheat free diet? Please Help!!!
Thank you all so much for your time ....
I just want to be healthy and in control of whats going on here!