Razzle, you may want to consider checking out whether the 'lactose' issue is really lactose intolerance via testing, or could be casein intolerance which is entirely different. Casein is the major protein in milk and many people think they have lactose intolerance when it's not the case at all. It could be due to casein and that produces a different reaction. Lactose problems result from not having the enzyme to digest lactose. Casein problems result from producing antibodies to the casein and that's an autoimmune issue that can result in very different symptoms which might be what's causing some of what you're going through.
If you're reacting to casein, you can also cross-react to other substances such as gluten. You may want to double-check.
Thanks for the reply, CGal. By of sorts, I mean that a little tiny bit of milk won't hurt if it's in a product already but cheese, milk, butter, even yogurt itself or added to a product, I can't go near it. I have bad nasal allergies like mold, dust, certain animal dander, etc. No specific food has seemed to cause it and it occurs whether I've eaten recently or not. No, it's not mucous in the throat.
Razzle, what do you mean by a lactose intolerance of sorts? What allergies do you have and what are the symptoms? Do you experience an increase in mucus in your throat, or? Do any food 'precipitate' the feeling you're describing?