In the last 5 years, it has always been something, medically speaking. The most recent "diagnosis" is a condition called Neurally Mediated Hypotension. While this is a very real condition, my husband and I do not readily believe his daughter has it.
The mother reasons, because the daughter sometimes feels faint after getting into the shower immediately after waking that she must have NMH. And while this can be ONE sympton of NMH, there are many others that this condition would cause my stepdaughter to experience frequently. And she doesn't.
So my husband tells the mom, she doesn't have that problem when she's here, but she usually plays or eats breakfast first. Maybe you should switch up her routine. To which mom replies, "I hear you." That's it. Not, "Sure, that sounds like a good start, I'll try that."
Instead, she wants to make dietary changes and is considering putting her on blood-pressure medication.
As I've mentioned, this is not the first, nor will it be the last, "diagnosis" that the mom will make on the daughter. How should my husband deal with this? She will only TELL him what's going on, not ask for his input or advice. She's made up her mind on what their daughter has and how she's going to treat it. What recourse does a non-custodial parent have?