More like a plant induced or perfume induced dermatitis(Berloque). Calamine lotion applied should help. Do consult doc.
Hello,
It can be due to contact dermatitis or allergic reaction. Check the allergens which you may have come in contact with and take some antihistaminic like Benadryl or Claritin. Also consult a dermatologist as you may need topical as well as oral steroids and get scabies ruled out.
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 and please do keep me posted on how you are doing.