Medical tests can determine if your child has a sensitivity to gluten, casein and other foods. Any pediatrician or a physician from the DAN list can order these tests before you begin the diet.
Before you consider a change in your child's diet, consult with a physician and nutritionist to make sure you are providing an adequate diet and nutritional supplements, if necessary. Also, please read any of the books and web sites about the diet.
Some advocates of dietary intervention suggest removing one food from the diet at a time, so you will know which food was causing a problem. It also is helpful to ask people who do not know about the dietary change if they see any improvement after a few weeks