Posted on April - 7 - 2012 ADD COMMENTS

The 3-year-old has the rare genetic condition Trisomy 18 and was hospitalized earlier this year with pneumonia. Santorum's campaign did not say why she was hospitalized. The former Pennsylvania senator is spending a few days off the campaign trail for

Darrow has Mosaic Trisomy 18, a rare genetic condition. Trisomy is the presence of an extra set of chromosomes in a person's cells. The genetic condition gained national media attention earlier this year when Republican presidential candidate Rick

jpgAt age 3, Rick Santorum's daughter Bella, who has been hospitalized for the second time during his presidential campaign, has outlived the majority of children born with Trisomy 18, a chromosomal defect that occurs in one out of every

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