Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) 3-methylglutaconyl-CoA hydratase deficiency ?
    ### Response:
    3-methylglutaconyl-CoA hydratase deficiency is an inherited condition that causes neurological problems. Beginning in infancy to early childhood, children with this condition often have delayed development of mental and motor skills (psychomotor delay), speech delay, involuntary muscle cramping (dystonia), and spasms and weakness of the arms and legs (spastic quadriparesis).
    