Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Glucose transporter type 1 deficiency syndrome ?
    ### Response:
    What are the signs and symptoms of Glucose transporter type 1 deficiency syndrome? The most common form of glucose transporter type 1 deficiency syndrome (GLUT1 deficiency syndrome), called the classic type, may be characterized by: Recurrent seizures (epilepsy) beginning in the first months of life Microcephaly (unusually small head size) that develops after birth Developmental delay Intellectual disability Speech and language impairment Movement abnormalities (i.
    