One of my cats gets (apparently?) very upset whenever I am in the bathroom. Meaning, she meows loudly and frequently in a way that sounds, to my ear, sometimes like distress, and sometimes like she's being tortured.
Now, I might suspect a medical condition, or that's she's in extreme pain... but she only does this when I'm in the bathroom. I might be using the toilet, or taking a shower, or just washing my hands; I haven't been able to identify it with any particular activity. It maybe helps if I close the door (I usually leave it open when I'm in there and have only just now tried shutting her out), at least until she pushes the door open and starts again. She doesn't even seem to be paying attention to me, necessarily; sometimes she'll stare at the other door (between the bathroom and bedroom, which I always keep closed) and complain. Sometimes she'll complain from the hall, but in general, she doesn't seem afraid to enter the bathroom.
As soon as I leave the bathroom, she stops. In fact, if I leave and go sit down, she'll usually wind up on my lap, purring, literally within a minute of the 'distress' behavior. Also, while I usually keep the bathroom door closed when I'm not in it, I'm pretty sure she gets in there sometimes (either because I forget, or she pushes the door open — I don't normally pull it all the way closed so that it latches) and I can't recall her exhibiting this behavior except when I'm in the bathroom.
I don't think she just wants attention, because again, this behavior is only associated with the bathroom. Also, I don't always go sit down after I'm done in the bathroom, and trying to give her attention while I'm still in the bathroom doesn't help.
Does anyone have any theories on what could be bothering her and how (short of building an outhouse) I might go about helping her to calm down?