Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Skin Cancer ?
    ### Response:
    What Happens During Screening? Checking for cancer in a person who does not have any symptoms is called screening. Screening can help diagnose skin problems before they have a chance to become cancerous. A doctor, usually a dermatologist, screens for skin cancer by performing a total-body skin examination.
    