1) Blue devils 2) Blues 3) Depression 4) Vapors 5) Vapours 1) Low spirits 2) Vapors 3) Vapours 
archaic or obsolete terms > Medical: A kind of sick or nervous headache, usually periodical and confined to one side of the head; now more commonly called migraine headache or migraine. a fancy; a whim; a freak; a humor; esp., in the plural, lowness of spirits. a sudden vertigo in a horse, succeeded sometimes by unconsciousness, produced by an exce...