Loss of appetite caused by being in love; a romantic but unhealthy condition described in classical and medieval medical texts.
From French 'amoureux' (amorous) combined with the Greek medical suffix '-ia' indicating a medical condition. This blends Romance language and Greek medical terminology.
Medieval doctors actually believed love could cause loss of appetite and prescribed remedies—they weren't totally wrong, since butterflies and anxiety DO suppress hunger, but they thought it was a separate disease!
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