White blotchy rash on legs see picture

I've had this come and go for the last few weeks, I've shown midwife and seen doctor but no one knows what it is or

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This skin rash is back after almost vanishing during the pandemic - The Washington Post

Why do my arms and only my arms break out in itchy bumps that show up only at night? What could be causing this to happen that is so intensely itchy, it

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