ROCHESTER, MN (RNN) - Rep. Jesse Jackson Jr., D-IL, is being treated for bipolar disorder, according to the Mayo Clinic.
A statement from the clinic says Jackson, 47, is "responding well to the treatment and regaining his strength" for Bipolar II depression.
Bipolar disorder is treatable and is characterized by extreme mood swings. It involves an imbalance of chemicals in parts of the brain that regulate emotion and thinking.
While the clinic has not commented on Jackson's treatment plan, it is often treated with a combination of medication and therapy.
Jackson has been on medical leave from Congress since June.
According to the Mayo Clinic, approximately 1 percent of the adult population is bipolar and the disorder affects men and women equally. It generally runs in families and can be triggered by stressful life events.
Jackson, the son of famed civil rights leader Jesse Jackson, has served Illinois' second district in the House since 1995.
He has also co-authored three books, including A More Perfect Union and Legal Lynching: Racism, Injustice and the Death Penalty.
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