When I was first born, I was given formula in the hospital that I reacted to because it had dairy in it. At the time, food allergies were poorly understood and rarely diagnosed. My mom had to go to multiple doctors to get my allergies tested and a doctor said I was diagnosed with a milk allergy. She also had to go on an elimination diet to see what it was in her breast milk that was making me react severely. I have never outgrown or overcome my dairy allergy, it is still anaphylactic and actually has gotten worse with age.
I use EpiPens, Albuterol Inhaler, daily Zyrtec, Benadryl as needed, and daily Flonase. I have asthma, food allergies, and other allergies to dust and animals so these help me keep that in check.