Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Uncombable hair syndrome ?
    ### Response:
    How is uncombable hair syndrome diagnosed? A diagnosis of uncombable hair syndrome (UHS) is made by observing the characteristic symptoms of the condition, as well observing the hair shaft under a special microscope. When the individual hair strands are viewed under a microscope, the hair is either triangular or kidney-shaped on cross section, and has a canal-like longitudinal groove along one or two faces.
    