Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Glucose-6-phosphate dehydrogenase deficiency ?
    ### Response:
    What are the signs and symptoms of glucose-6-phosphate dehydrogenase (G6PD) deficiency? People with G6PD deficiency do not have signs of the disease unless their red blood cells are exposed to certain chemicals in food or medicine, certain bacterial or viral infections, or to stress.
    