Historical clue formulations

• Reasons to scratch one's head, say — 2024-04-29
• Yens — 2011-11-22
• Yens — 2010-02-11
• Urges — 2008-07-01
• Burns — 2008-02-02
• Feels irritated — 2006-03-05
• They're produced by hives — 2003-08-03