Rev. Jackson said in an interview yesterday with an NBC affiliate in Chicago that it was "inappropriate" for him to talk about his son's undisclosed problems.
"I speak as a father. During this pain, as he comes out of his crisis, we will be with him. And we hope that he'll be fully restored to his health. Right now, he's going through a tremendous challenge."
Jackson, Jr.'s office released a statement last week that said he was having "serious" health problems and has "grappled with certain physical and emotional ailments... for a long period of time."
Rev. Jackson has denied a report that his son attempted suicide.