“According to DSM-IV-TR criteria for major depressivedisorder, depression corresponds closely to A1 "depressed mood", whilemelancholia is roughly compatible with A2 "markedly diminished interestor pleasure.”出處:
https://pubmed.ncbi.nlm.nih.gov/23012851/滿複雜的,精神科醫師才有辦法理解吧…