CHICAGO – U.S. Rep. Jesse Jackson Jr.'s disclosure that he is suffering from a "mood disorder" still leaves many questions about his secretive medical leave and whether the Illinois congressman has satisfied mounting calls to be more open about his monthlong absence.

Just hours after Democratic leaders in Congress ratcheted up pressure on Jackson to reveal more information, his office released a brief statement from his doctor on Wednesday saying the Chicago Democrat was receiving "intensive medical treatment at a residential treatment facility for a mood disorder."

But it offered no details about Jackson's whereabouts or even the name of the doctor, citing federal privacy laws.