Brief Answer:
IgG deficiency may improve or deteriorates as the child grows

Detailed Answer:
Hi

Thanks for asking on this platform

I have gone through the query and do understand your.
IgG deficiency diagnosed in this age(below 4 years of age) may improve as the child grows. Sometimes it may worsen and can develop common variable immunodeficiency (where other antibodies like IgA also gets deficient).
It is not possible to assess at this age that which side it will turn. Serial monitoring of immunoglobulin levels is needed.
Repeated infection which is not responding to antibiotics or if baby is not growing well may need immunoglobulin replacement therapy as advised in your case.
Regarding food there is no restriction but proper vaccination (pneumococcal, hemophilus, meningococcal and others) is needed to prevent infections.
Give special attention to any kind of infection as early antibiotic treatment is needed to avoid the worsening of infection.
He may need repeated immunoglobulin replacement if infections are not responding to antibiotics.
I hope this helps.
Wishing for your baby's good health.
I shall be glad to help you out if you need any.
Regards

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Brief Answer:
Follow with pediatric haematologist

Detailed Answer:
Hi

Thanks for follow up

For infusion per se you can go to the pediatrician, but it is better to follow with pediatric haematologists as they are specialised in this field.
IgG deficiency in early age may recover as the child grows unlike when detected in adult it usually persists for lifelong.
So as the child grows this IgG deficiency may recover, may remain same, while in some case it may progress further involving other immunoglobulins also.

Regards

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