The present invention addresses the problem of providing a novel method for diagnosing and/or treating a mood disorder, the method being superior to prior art techniques. The present invention resolves the aforedescribed problem by providing a method for diagnosing and/or treating a mood disorder in which the antibody levels for anti-SITH-1 antibodies and anti-HHV-6 antibodies are used as indices.
METHOD FOR DIAGNOSING, TREATING, OR PREVENTING MOOD DISORDER