Kalmar "black bile" tana nufin wani ra'ayi a tsohuwar Girkanci da kuma na zamanin da, wanda aka yi imani da cewa daya ne daga cikin humors ko ruwan jiki guda hudu da suka shafi lafiyar mutum da halayyar mutum. An yi tunanin cewa baƙar fata yana da alaƙa da nau'in ƙasa da yanayin melancholic, kuma an yi imani da ɓoyayyiyar sa. An kuma yi imanin cewa yana da alaƙa da baƙin ciki, baƙin ciki, da sauran motsin rai mara kyau. A cikin kalmomi na likitanci na zamani, ba a gane manufar baƙar fata ba a matsayin ingantacciyar ra'ayi na physiological.