The signs and symptoms of celiac disease can vary greatly and are different in children and adults. The most common signs for adults are diarrhea, fatigue and weight loss. Adults may also experience bloating and gas, abdominal pain, nausea, constipation, and vomiting.
However, more than half of adults with celiac disease have signs and symptoms that are not related to the digestive system, including:
- Anemia, usually resulting from iron deficiency
- Loss of bone density (osteoporosis) or softening of bone (osteomalacia)
- Itchy, blistery skin rash (dermatitis herpetiformis)
- Damage to dental enamel
- Mouth ulcers
- Headaches and fatigue
- Nervous system injury, including numbness and tingling in the feet and hands, possible problems with balance, and cognitive impairment
- Joint pain
- Reduced functioning of the spleen (hyposplenism)
- Acid reflux and heartburn
In children under 2 years old, typical signs and symptoms of celiac disease include:
- Chronic diarrhea
- Swollen belly
- Failure to thrive
- Poor appetite
- Muscle wasting
Older children may experience:
- Weight loss
- Short stature
- Delayed puberty
- Neurological symptoms, including attention-deficit/hyperactivity disorder (ADHD), learning disabilities, headaches, lack of muscle coordination and seizures
Dermatitis herpetiformis is an itchy, blistering skin disease that stems from intestinal gluten intolerance. The rash usually occurs on the elbows, knees, torso, scalp and buttocks.
Dermatitis herpetiformis is often associated with changes to the lining of the small intestine identical to those of celiac disease, but the disease may not produce noticeable digestive symptoms.
Doctors treat dermatitis herpetiformis with a gluten-free diet or medication, or both, to control the rash.
When to see a doctor
Consult your doctor if you have diarrhea or digestive discomfort that lasts for more than two weeks. Consult your child's doctor if your child is pale, irritable or failing to grow or has a potbelly and foul-smelling, bulky stools.
Be sure to consult your doctor before trying a gluten-free diet. If you stop or even reduce the amount of gluten you eat before you're tested for celiac disease, you may change the test results.
Celiac disease tends to run in families. If someone in your family has the condition, ask your doctor if you should be tested. Also ask your doctor about testing if you or someone in your family has a risk factor for celiac disease, such as type 1 diabetes.