Hi thanks or your question You had developed allergic reaction to the local anaesthetic ointment applied to your skin, during Radio frequency treatment. Anaesthetist usually, apply lidocaine ointment to skin to produce local anaesthesia for various procedures. Lidocaine ointment can produce local allergic reaction. The Doctor has prescribed you Demelan ointment, which contain Glycolic acid, Kolic acid and Arbutin Demelan cream increases cell turnover and helps to diminish fine lines and gives healthier and smooth skin texture. Doctor has given you right treatment. Additionally, you can use local steroid antibiotic combined cream.