suspect Munchausen by Proxy
I have an 8yo girl and a 6yo boy and they live with their mom (my ex). Here is what she says that he is allergic to (to date): birds, McDonald's (yes, the restaurant, according to my son!), cats, dogs, horses, farm animals, food dyes, latex, perfumes, tomatoes, and trees. Here is what he is actually allergic to (according to tests and doctors): Cats and trees (both of which I'm allergic to so that makes sense). And he does seem to have asthma, which I have as well. Also, she claims he has ADHD when there is no sign of that (my daughter, on the other hand, could easily be diagnosed as such!). Yet nothing of note with my daughter. Just my son.
And he always seems to have these problems soon after returning from my house (yes, I'm a single dad, but my house is very clean - I'm a clean freak!). He has missed over 20 days of school this year as a result of all this.
I suspect Munchausen by Proxy, though it's not (thankfully) near as severe as what has been detailed here - and I don't ever want it to get that way. What do you think and what should I do? Does anyone have experience with the less severe, but still harmful, behaviors like this?