We've been desperately wanting to get my husband tested for a dairy allergy, because after ingesting he gets wheezy, rhinitis, skin rashes and spots, and very nasty digestive issues which can last for a week after a small ingestion of anything with even tiny amounts of dairy. Symptoms have been getting worse and worse and upping in severity everytime he accidentally gets 'milked'. (I really feel for people with allergies eating out, because it can be life or death). His symptoms really started after he got pneumonia last year. It's not just lactose, because lactose free stuff (and naturally lactose free stuff like parmesan) does the same, so milk protein the more likely cause of his symptoms. We want peace of mind, since things seem to get worse and worse each time.
However, because developing a dairy allergy in adults is rare, and lactose intolerance is not, we're really having a hard time getting his GP to buy in on testing. They just say avoid dairy.