It sounds like you have a rash on your right elbow that is red, itchy, and dry. If traditional lotions or creams like Cortate are not helping, you could try using a moisturizing cream with ceramides twice a day. The dryness of your skin may be exacerbated by colder temperatures. Maintaining a humidity level of 30-50% in your home could also aid in improving your skin condition. If the rash persists, a stronger cortisone cream may be necessary, which can be obtained from the pharmacy. It would be a good idea to consult with a pharmacist to see if a different product may be more effective for you.