DS has been hiding and eating food not suitable for coeliacs. Meanwhile I'm spending a fortune on gluten free food, taking him to medical appointments, letting him miss important stuff because he has unexplained stomachaches. When all the while he's been hiding snacks under the bed and in his school bag. I confronted him gently but he lied, and keeps lying. I've said I know it's hard for him (he was diagnosed aged 10 or 11, and is now 13) and that I'm prepared to buy whatever gluten free alternatives he likes. But he must be truthful with me.
I don't know where to go from here, as he just won't admit it even though the evidence is right there. How can I make him understand that this is not ok? How do I ensure he won't carry on buying these things after school? This morning I took his money away. Hes' going to want to fight me every morning for it.