My boy is 2 month old he throws his head back is it normal or not?

Needs to see doctor: Does he raise his arms when he throws head back? Does he also close his eyes when he does that? Does he do that many times a day? The above features are suggestive of a type of seizure. Although it may be simply a benign condition, it may be a type of seizure such as infantile clonus, and thus he needs to be seen by a pediatrician or a pediatricneurologist just to be on a safer side.