Relating to cyclothymia, a mild mood disorder characterized by alternating periods of elevated and depressed mood.
From Greek 'kyklos' (circle) + 'thymos' (spirit/mood) + '-iac' (relating to). This psychiatric term emerged in the late 19th century to describe cycling mood patterns.
The word literally means 'circling mood'—people with cyclothymia experience mood swings like a wheel going around, but milder than bipolar disorder, and it's been recognized since ancient times!
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