Hi Elyse,
I don't take hydroxy (I tried it briefly a few years ago but suffered an adverse reaction to it). I do, however, get itchy arms and was told it was due to my diabetes - go figure. You are so right when you wrote that it's so frustrating not knowing what causes what (I sometimes think that we're more often the medical professionals here!!). I hope you get some helpful answers. 🤗🤔

I was thrilled with the results on hydroxychloroquine, aka Plaquenil, then I developed a full body rash. Both my rheumy and dermatologist said it was a reaction to the medication.

Not diagnosed with fibromyalgia. I do have overlapping autoimmune diseases, so who knows. Rheumatologist says treatment is the same…I read itchiness is a possible side effect of Plaquenil. So hard to determine cause. I told rheumatologist last week. Thanks for your response.😊

I am not on hydroxycloroquine but my arms are often itchy in the evening. Not sure why.