What are obvious signs and syptoms of it?

Is it pretty much like reflux symptoms?

Sorry...I don't know about any of that, as I have never dealt with allergies to anything. Andrew's GI drew blood to check for Lactose Gene Deficiency...so I was just wondering what signs he would show?

Here's some good info on lactose intoll, and the different types.

http://www.kellymom.com/babyconcerns/lactose-intolerance.html

The symptoms are vomiting, diarrhea, dehydration, and failure to thrive.

I would think with everything I learned about lactose intol, that Andrew wouldn't have made it this long without a diagnoses, so I wouldn't count on this test finding anything as far as true genetic lactose intol.

Causes:

Congenital lactose intolerance is inherited as an autosomal recessive trait and is very RARE.
Primary lactose intolerance is due to low levels of lactase, which develop AFTER childhood.
Secondary, or acquired, lactase deficiency may develop in a person with a healthy small intestine during episodes of acute illness. This occurs because of mucosal damage or from medications. Some causes of secondary lactase deficiency are as follows:
Acute gastroenteritis
Giardiasis
Ascariasis
Crohn disease
Celiac sprue
Tropical sprue
Radiation enteritis
Diabetic gastropathy
Carcinoid syndrome
Whipple syndrome
HIV enteropathy
Kwashiorkor
Chemotherapy
Gastrinoma

That was some good info. Generally, unless you're from an ethnicity that has a high % of LI (Asian countries are almost all LI), it doesn't show up till after age 3 and even then it's pretty early. Babies who are born LI are extremely sick after birth and can die if no one figures it out. Both of my kids are milk/soy protein intolerant and taht is a lot more common and can cause the FTT and reflux issues.

Here's the info that I had posted earlier about dairy allergy versus lactose intolerance "interesting info"

Lactose Intolerance
Lactose intolerance is not an allergy to milk or lactose. Lactose intolerance is an inherited deficiency of intestinal lactase enzyme which results in the milk sugar (lactose) remaining undigested in the gut, and then being fermented by gut bacteria to produce lactic acid. This causes bloating, gas, cramps and diarrhea, which often occurs several hours after ingestion of lactose. This is treated by substituting a lactose reduced milk (e.g., Lactaid milk) or taking lactase enzyme (Lactaid tablets) with milk products. Lactose intolerant people can often take small amounts of milk and lactose with no symptoms (usually up to 100 ml or 3 oz. cow's milk) and strict milk avoidance is unnecessary. Strict avoidance of lactose worsens the problem. Continued ingestion of lactose helps the gut continue to be able to digest some lactose.

It's not a ton of info, though.

Wow. Tons of great information on this post! Way to go ladies!

Curran has a registered RAST allergy to milk but I feel he also has an intolerance as well. Sometimes you can have both things working against you. For Curran his main complaint is the gastro issues with diary but he gets the stuffy runny nose and shiners almost right away too.

Reflux is made worse with allergies, much the same way it is worse when they are sick.