<s>[INST] my 7 year old son has start twiching face and shoulders he moves his head so much he dosnt realize,and he also blinks his eyes two.his vision was fine even that is getting bad.he is getting pale.i am getting really worried.where it took him half hour 2 do his homework it takes him hour and a half [/INST] Hi, Abnormal body movement which we call involuntary movements are usually habitual and psychological. It has nothing to do with brain development or intelligence. My advice is to see a neurologist or psychologist. They can advise some behavior changes therapy and this problem can be overcome.  Wishing your son a happy healthy life. Hope I have answered your query. Let me know if I can assist you further. Best Chat Doctor.  </s>