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Hello I'm Dr Osula
Do your rashes come and go? And if possible do you have any pics of what it looks like?
Ok, the rashes do not stand out in particular, meaning there could be any number of causes for this
From allergy to a skin reaction like urticaria or something, or deficiency
scabies is unlikely if the rashes come and go
You'll benefit from antihistamine like Cetrizine 10mg once daily to try supress the iching internally and any urea-based cream such as Balneum plus or hydromol
I'll advise blood test such as iron, thyroid function test to make sure its not blood or hormone disorder causing your symptoms
I dont think steroid cream it would work for this scenario as its not inflammatory though it can relieve itching as well, calamine lotion can provide relief also