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marked by alternating periods of mania and depression.
m.-d. disorders former name for the bipolar disorders.
1. Pertaining to a manic-depressive psychosis (bipolar disorder).
2. One suffering from such a disorder.
Of, relating to, or having bipolar disorder.
A person who has bipolar disorder.
bi·po·lar dis·or·der(bī-pō'lăr dis-ōr'dĕr)
Affective disorder characterized by occurrence of alternating manic, hypomanic, or mixed episodes and with major depresive episodes.