Blues legend Etta James has been hospitalized with a serious infection, reports CNN. Her son Donto James says the 72-year-old singer is being treated in a California hospital and has been diagnosed with a bloodstream bacterial infection, but he is more concerned with her Alzheimer's disease--which she was diagnosed with a year ago. "Right now she is very confused," he said, describing his mother as "quite combative ... fighting, biting -- I'm talking way off the chart." James also told Reuters that his mother became ill while at a detoxification center for treatment to an addiction to painkillers which began after she suffered a back injury a few years ago. Read More: 40 of our Favorite Female Grammy WinnersHow Etta James was portrayed in "Cadillac Records."