A person with a head ache and possible asking, "how do I know if I have a gluten allergy." As a headache is a possible symptom.

How Do I Know If I Have a Gluten Allergy?

How do I know if I have a gluten allergy? This is a difficult question to answer. The reason is that many of the symptoms you may have are symptoms to many other ailments and so it is hard to discern. For example, my wife is gluten intolerant. However, for years due to her symptoms, she thought she had everything from irritable bowel syndrome to chronic fatigue syndrome. She did not really know what was wrong with her until about 12 years ago when we started putting the pieces together and finally realized that she was gluten intolerant. What a relief!

But no one wants to wait years to figure this out. So here is a list of possible symptoms that might indicate a gluten allergy. If you have any of them, then seek the advice of a doctor who can help you confirm if you have a gluten intolerance or not. And of course, your doctor will likely want to test you for Celiac Disease.

How Do I know If I Have a Gluten Allergy? – Possible Symptoms

Here is a list of possible symptoms from Medical News Today that might help you to determine if you have a gluten allergy:

1. Diarrhea and constipation

Occasionally having such digestive issues is normal, but experiencing them on most days can indicate an underlying condition.

People with Celiac disease may also experience diarrhea and constipation. They may also have poop that smells particularly unpleasant, as the condition causes poor nutrient absorption.

2. Bloating

Another very common symptom that people report in cases of gluten intolerance is bloating. This refers to the feeling of a full stomach that is uncomfortable and lasting. It is common also to feel a buildup of gas.

Over-eating is the most common reason for bloating, but it can happen for a number of different reasons. In people with gluten intolerance, the feeling of bloating may occur very regularly and is not necessarily related to the amount of food they eat.

3. Abdominal pain

Similarly, several different causes can lead to abdominal pain. But, again, those reporting gluten intolerance often note experiencing abdominal pain frequently and without another obvious reason.

4. Fatigue

Fatigue is another symptom that people may find hard to identify, as it can have a lot of different causes. People with gluten intolerance may have persistent feelings of tiredness that impair daily functioning.

5. Nausea

People with gluten intolerance and/or a gluten allergy may also experience nausea, particularly after consuming a meal containing gluten. Nausea can have many causes, but if it often occurs after eating gluten it can be a sign of gluten intolerance.

6. Headaches

Experiencing regular headaches is another symptom that can occur in people with gluten intolerance and/or gluten allergies.

7. Other symptoms

People with gluten intolerance may experience several of these symptoms on a regular basis.

It is also possible for other symptoms to occur with gluten intolerance, although they are less common.

These may include:

How Do I Know If I Have A Gluten Allergy? Other Possible Symptoms

Because symptoms for having a gluten allergy can vary so much from person to person, we’ve provided a list of even more symptoms. Here is a list of other possible symptoms that you could experience if you are allergic to gluten. This list is from unlockfood.ca:

What are the symptoms of a wheat allergy?

Symptoms of a wheat allergy include:

  • Flushed face, hives or a rash
  • Red and itchy skin
  • Swelling of the eyes, face, lips, throat or tongue
  • Trouble breathing, speaking or swallowing
  • Anxiety, distress, faintness, paleness, weakness, sense of fear or doom 
  • Cramps, diarrhea, vomiting
  • A drop in blood pressure, rapid heartbeat, unconsciousness (in the most severe cases)

Wheat doesn’t usually cause anaphylaxis (which is a serious food allergy reaction that can be life-threatening). But any serious allergic reaction to wheat should be checked with your doctor. If you’re experiencing any of the symptoms discussed in this article, please visit your doctor to get a proper check-up and tests done.


Being allergic to gluten is not pleasant. Many of the above symptoms can make day to day life hard to deal with. So it is important that if you’re having any or some of these symptoms that you speak to your doctor. A doctor or a medical professional can help you find out if via testing. And if you discover that you do have a gluten allergy then you can make dietary and life style changes that can greatly improve your quality of life. I know that is definitely true in my wife’s case. Knowing is the first step to starting to feel so much better.