Related Clues:

• Bipolar phase
• More than passion
• Mood disorder
• Tulip ___ (1630s Dutch market bubble)
• Obsession of crew needing first class to return
• Over in part of Spain, a modern craze
• Suffix for a fad
• Guy initially is all enthusiasm
• Fad suffix
• Heightened enthusiasm
• Cause of insomnia or euphoria