By comparing your symptoms with the common symptoms of Celiac Disease such as constipation, rashes, weight gain/ loss etc.

Common symptoms of Celiac disease are intestinal and gastric problems. Diahrea, vommitting and other intestinal disorders can all be symptoms of this health problem.

Celiac disease can produce a variety of symptoms, depending on how severe it is as well as other personal variables. Common symptoms in more severe cases of Celiac include diarrhea and weight loss. In milder cases, symptoms may include fatigue or anemia. There are other symptoms that occur more rarely, and it is also possible to have Celiac without displaying any symptoms.

Some symptoms of celiac disease is throwing up, diarrhea, weight loss, rashes. Some people who have celiac disease may not have any symptoms but to find out for sure if you have celiac disease you would need to take a blood test.

By going on a gluten free diet