Food Allergies Treatment

I’m twenty years old. Two years ago I started in with what I assumed to be very severe lactose intolerance. I couldn’t even have a teaspoon of milk without immediately having intense cramping and then, not too long later, loose stool (I’m talking within a half an hour).
About six months into this, it stopped. I could drink an entire glass of milk or eat an entire bowl of ice cream and nothing would happen.
Now, two years later, it’s come on again, very suddenly. Even the smallest amount of milk screws up my system.
I’ve asked a doctor and he says that allergies and lactose intolerance don’t just come and go.
Just to note, I do have other allergies (dust, animals, grass, the usual) and I do have very mild asthma.
Any ideas?

My 7.5 year old son is allergic to cow’s milk. (Allergic – not lactose intolerant) He just had his annual RAST test last week. We got the results today – 0.99 ‘low moderate’. ;-( Another year of reading labels, saying ‘no thank you’ to unlabelled treats, teaching him to deal with it all graciously.
Anyway, I’m wondering at what age we should give up hope of ‘outgrowing’ the allergy. What’s the oldest you’ve ever heard of someone outgrowing a milk allergy?

No. But it might cause a rash, and if the acne is already there it will worsen it.

One doc says that since it is an allergy, it doesn’t matter how much dairy I eat – even a little bit will affect my baby. Another doc says dairy in moderation is OK. Who’s right?

The doctor said that he can’t even really have soy yet, either. Thanks!