yeah, i had the same condition, and yes, calamine worked for me. :D
Hello,
The symptoms are suggestive of eczema. Eczema is term for a group of medical conditions that cause the skin to become inflamed or irritated. You can apply some calamine lotion at the rash as it will help in soothing the skin. You can take some OTC oral antihistamine medications like Benadryl or Claritin and also apply steroid cream on the rash. Also use good quality moisturizers to prevent moisture loss from the skin.
If still the symptoms do not improve then please get a clinical examination done by a dermatologist. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.