The heavy breathing is a clear sign of
ketoacidosis. As is muscle pain, nausea,
and stomach pain. The reason for the muscle pain is due to the fact that the ketones start to eat away at the fat and muscle storage, so you're child will feel pain and a sense of weakness. Also the sweating...yet another ketone sign. Another thing as well is ketones tend to attack the immune system, which would explain his recurrent ear infections. Rapid weight loss is another sign.