I can determine the exact cause only after a clinical examination. This itchy rash can be due to contact dermatitis, fungal infection, insect bite or folliculitis. Ease the itchy skin with cold compresses and antihistamines. Mild hydrocortisone cream may be applied to ease the symptoms. It is best to get it examined by a dermatologist and start treatment accordingly. I sincerely hope it helps.
Best wishes and regards!
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