Description: NEW YORK (AP) — On camera, the family on USA's "Chrisley Knows Best" has briefly addressed son Kyle's second-season absence, saying he's "going through a difficult time." Off camera, the drama is much more intense. Heading into next Tuesday's season finale, patriarch Todd Chrisley said his 24-year-old son is off his medication for a diagnosis of bipolar disorder and is estranged from the family. Kyle confirms he's not taking his medication but said he has seen a new doctor who questions his diagnosis. Kyle is living with his wife, Alexus, whom he married in April, and hasn't seen his father, siblings, stepmother Julie or 2-year-old daughter Chloe in months. The toddler lives with Todd and Julie, who share custody with Kyle. In any case, Todd said in a recent interview his son will not return to the show, which was renewed for a third season. He needs structure, the father said, and filming a television show i