Jérémie., there are treatments for those with food allergies with a certain kind of acupuncture. The woman the developed it was an acupuncturist. She had given herself a treatment and feel asleep on an open bag of organic brown rice. Afterward she had an intuitive feeling to cook some rice and eat it. She was allergic to rice.

She had no allergic reaction and this became a worldwide movement. I bet you could Google it for your son.