Hi Dr, I have a son, 1.8 years old, he is a G6PD deficient. I observed swollen lymph nodes at the back of his ears. Is it because he has cough? or is it a symptom of G6PD? Since he always have common colds/cough in the morning, we give him ascorbic acid, is it okay for him to take ascorbic acid? Looking forward for your advice.Thanks Yours truly, Mom Ann