Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) CAV3-related distal myopathy ?
    ### Response:
    CAV3-related distal myopathy is one form of distal myopathy, a group of disorders characterized by weakness and loss of function affecting the muscles farthest from the center of the body (distal muscles), such as those of the hands and feet. People with CAV3-related distal myopathy experience wasting (atrophy) and weakness of the small muscles in the hands and feet that generally become noticeable in adulthood.
    