Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Aromatic L-amino acid decarboxylase deficiency ?
    ### Response:
    What are the signs and symptoms of Aromatic L-amino acid decarboxylase deficiency? Symptoms, which typically present during the first year of life, include severe developmental delay, weak muscle tone (hypotonia), muscle stiffness, difficulty moving, and involuntary writhing movements of the limbs (athetosis).
    