Hi,
Welcome to the ehealthforum and I am really glad to help you out. There can be many causes of this itchy skin. Skin conditions like dermatitis, scabies and hives, internal diseases like liver and kidney disorders,diabetes, iron deficiency anemia and irritation and allergic reactions to chemicals, wool, soaps, cosmetics are some of the commonest causes of itchy skin.
Apply calamine lotion and take some antihistaminics like Benadryl. If the symptoms persist then topical steroids may be needed. For this please consult a dermatologist. You should take a comfortably cool bath and wear smooth-textured cotton clothing. Covering the affected area with bandages and dressings can help protect the skin and prevent scratching.
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 doctor. I sincerely hope that helps. Take care.