My baby is 2 months old and for three days he suddenly jerks his arms for 15-20 seconds. At that time he can't even cry properly because of the jerks. is it normal?

A. Little bit of this kind of issue is seen due to deficiency of magnesium in the body so you can check with your doctor but if you see that it is so much of discomfort that the child is unable to cry also that it may be associated with other issues but the basic that we can suggest you is probably deficiency only