Asthma and eczema used to be (may still be) associated with milk allergies.
I don't have asthma, but have had eczema nearly all my life. As a kid the pediatrician claimed it was an allergy to peanuts and chocolate. I spent a very miserable year not eating either, and I still had it. I'm 49 and I still have it. It's basically a seasonal allergy, and is exasperated by stress.
I’ve got excema, allergies and slight asthma. I definitely see an uptick in flare ups when I eat more dairy. I’m allergic to milk, but do eat limited cheese, ice cream etc.
I treat it as a self-controllable inconvenience.