Has you child ever had an illness, gotten better, & claimed to still feel bad...but it's all in her head?

My daughter is 4. She has legitimately had some issues with her skin bothering her. Her clothes bothered her skin really bad. She even woke in the night with her sheets irritating her skin, so I am confident she wasn't messing with me. (even though there was never any visible irritation) I took her to the doctor, and he told me to give her Zyrtec and put a special lotion on her. It seemed to help immediately. Here's the thing. Most of the time now, she is fine. She will play in the sandbox. She will wear her bathing suit (that has a very uncomfortable hula skirt to wear on top). She will lay all over our sofa that has a somewhat dense material. She doesn't complain at all in doing these things. But, when I tell her to put on her comfy pj's...or soft cotton play clothes...she will go ballistic saying her clothes are bothering her. I think she really thinks they are bothering her. I don't think she is making it up...but when she doesn't think about things bothering her...they don't. (Kinda like when you think about an itch on your nose...you get an itch on your nose) Anyway, I am trying to just ignore her behavior...and give her 2 clothing options...hoping 1 won't "bother" her. Do y'all think this is the best resolution? Do you have any ideas for me here?