Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Microcephaly ?
    ### Response:
    Microcephaly is a rare neurological condition in which a person's head is significantly smaller than expected based on standardized charts. Some cases of microcephaly are detected at birth, while others develop in the first few years of life. Some children with microcephaly have normal intelligence and development.
    