Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Melanoma ?
    ### Response:
    Tests that examine the skin are used to detect (find) and diagnose melanoma. If a mole or pigmented area of the skin changes or looks abnormal, the following tests and procedures can help find and diagnose melanoma:         -  Skin exam: A doctor or nurse checks the skin for moles, birthmarks, or other pigmented areas that look abnormal in color, size, shape, or texture.
    