<s>[INST] My 10 year old son has been diagnosed with a motor tic disorder and PANDAS. This started last year in December. He has severe motor tics. Is there any reasearch to link this to flu vaccine? I have just realized that his symptoms were preceeded by a flu shot last year. His symptoms worsened this year after getting a flu shot. [/INST] HI motor tics and pandas as told by you are neuro psychiatric manifestations due to the antigens due to some disease which start attacking/liasing with our own nerves resulting in this symptoms.There is a probability of your kid getting accentuation of tics with the flu shot he received. </s>