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It is difficult to be sure as to the cause of low platelets (thrombocytopenia) in a neonate
The common causes for the same are infections,
and auto-immunity related problems
There are other rare causes like genetic conditions, maternal drugs related side-effects
and some others,
and only further testing and follow up would be able to find the exact cause,
but the good news is that in an otherwise healthy infant, it is very likely that the platelet counts will recover over a period of days/ weeks
and the baby is likely to remain normal, & healthy
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