Building an mobile app ( Derma(check sign))

I have a project to make which is an app , that can detect what type of eczema you have just by uploading a photo , what the app will do is that the programmer will already upload several picture of types of eczema so then after the patient upload the photo of the eczema , the app will try to match the photo with other type of eczema photos by scanning the surface , then it will tell you the result and the required creme for mediation