Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Fragile X syndrome ?
    ### Response:
    What are the signs and symptoms of Fragile X syndrome? Fragile X syndrome is characterized by developmental problems including intellectual disability and delayed speech and language development. Males are usually more severely affected than females. Additional features may include anxiety; attention deficit disorder (ADD); features of autism spectrum disorders that affect communication and social interaction; and seizures.
    