The study aims to evaluate the effectiveness of a mobile application to assist in the prescription of topical corticosteroids (TCS), focusing on best fit choices of potency, vehicle and volume. The mobile application will be developed from the results obtained in a systematic literature review and quality assessment of clinical practice guidelines for topical corticosteroid use. The quality of the guidelines will be assessed using the AGREE II tool. After the app user enters in information concerning patients' rash location and desired treatment duration, the app will generate a list of recommended topical steroids (focusing on specific quantity and potency) for the patient's particular area of need. The objective of the study is to evaluate whether the use of a standardized application will change prescribing practices for primary care physicians, physician assistants and nurse practitioners.