Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) autosomal recessive hypotrichosis ?
    ### Response:
    Autosomal recessive hypotrichosis is a condition that affects hair growth. People with this condition have sparse hair (hypotrichosis) on the scalp beginning in infancy. This hair is usually coarse, dry, and tightly curled (often described as woolly hair). Scalp hair may also be lighter in color than expected and is fragile and easily broken.
    