My 7 year old son was diagnosed with Celiac Disease this past year. Other than stomach aches, his behavior was the other major indicator that something was wrong. His teachers thought he had ADHA and Oppositional Defiant Disorder. They asked us to get him tested to confirm what they were seeing. He was also depressed, and very angry. One day, we were driving on the highway and he was upset with us. He was threatening to jump out of the car. He was starting fights everyday at recess. I think the principal had me on speed dial. He went from being a sweet and loving kid, to this monster that we didn't recognize. When I'd put him in time out, he would destroy his room. He could not concentrate at school. If we tried to sit down and do some homework, he would cry and scream the whole time. He was just not capable of doing the work in his state.
Once we had the blood test results from the specialist, she wanted us to keep him on gluten until his biopsy took place which was 6 weeks away. I tried to get the test moved up several times, but they couldn't fit us in. His behavior became so scary, I took him off gluten 4 weeks before the biopsy. The biopsy still showed damage to the upper intestine.
I want to share this with other parents because we went through hell trying to determine what his diagnosis was. His whole personality changed - anger, depression, defiant...
Every time he get's "glutened," we see the behaviors return, and they last about 3 weeks.
Now that he is off gluten, we have our son back.