you may benefit from a skin biopsy from your doctor to know what is causing the scaling on your legs
you need blood test to check your thyroid hormone levels. high thyroid levels can cause dry skin.
you may need prescription stronger steroid creams which could help as well. you said before you have only used mild steroid creams.
I would go from there to see if those suggestions help
have you talked to your GP doctor about the scale like patches of your legs?
let me know if you have other questions.
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