Great question: You already know that most folks who are discovered to have real igg3 deficiency are troubled primarily by recurrent nasal sinus infections. Until we know whether there's one of more genes for this, or whether it's the result of some other change in the immune system (igg3 can drop after other illnesses), i think the mainstream medical community will remain undecided. Glad you're proactive.
Answered 5/15/2019
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A doctor has provided 1 answer
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