An allergy to milk is completely different that being lactose intolerant. They are not related in any way and often get mistaken for the other. When you are lactose intolerant; your body is unable to process the dairy products as it lacks the enzymes. On the other hand if you are allergic to dairy then your immune system does not react well to dairy products. A dairy allergy can lead to itching, hives, eczema, tingling skin and nausea. You may also feel weak and dizzy in the bargain.
In order to prevent an allergic reaction you must avoid milk and all other dairy products. This includes cheese, butter, yogurt, sour cream and ice cream. Read the labels of canned foods that you purchase to check the ingredients for milk, whey, dried milk solids or butter. These will also cause an allergic reaction; though the intensity of the allergy is not very high. You must try and avoid processed foods as far as possible and eat only fresh foods. All ‘dairy free’ products are not necessarily free of milk. You must also avoid eating products that list ‘natural products’ as their flavors as they are normally milk based natural flavors.
If you are dining out then you must ask the server about the method of preparation and the ingredients used. Being aware of what you eat will definitely be helpful. Beware of canned tuna as it normally has lactose in the broth. You also need to keep a close watch on the kinds of medications you use as most of them use lactose as a base. Vegan food is your best bet if you suffer from dairy allergies as this type of food does not contain any animal products including milk.
Instead of using milk in your food preparation you can use soy milk. Butter can be swapped with margarine and water can replace milk. You can also choose to use vegetable oil instead of butter.