The phrase "a sort of madness" is correct and usable in written English.
It can be used to describe a feeling, behavior, or situation that is irrational or chaotic, but not necessarily in a clinical sense.
Example: "In the midst of the chaos, there was a sort of madness that took over the crowd, as everyone rushed to get a glimpse of the spectacle."
Alternatives: "a kind of insanity" or "a type of frenzy".
Perhaps the last 15 years or so will be considered a sort of madness, an anomaly, a strange dream.
And there comes another point, where the willingness to tolerate greed, and to live alongside it, and even to encourage it, becomes a sort of madness too.
"The willingness to tolerate greed, and to live alongside it, and even to assist it, becomes a sort of madness too".
His cameramen thought that he was becoming obsessed with filming these "stones," and he himself volunteers that he may have been "in the grip of a sort of madness".
Perhaps there is a sort of madness at work, if that is what one calls the belief that a certain idea of Europe — democratic and at peace, chastened by the last century's disasters, and without internal-border controls — is realizable.
A sort of madness for land and expansion gripped the Yankees and English-speakers of the South, buttressed by "scientific" race theories that placed white Anglo-Americans over supposedly brutish Indians, Spaniards and those of mixed race.
To that end, those reluctant to descend into a sort of Mad Max-style desert madness with the rest of Ocean's lemmings assuredly noticed the ads for DJ Snake's Encore while scrolling through their digital music service of choice.
Hammond's quasi-divine possession comes off as a sort of distanced madness, a fury that grips him not at all blindly; he calmly and unapologetically observes himself rising — or going deeper — into world-historical grandeur.
Dr. Joyce and his colleagues next proceeded to engineer a sort of March Madness for molecules.
In this culture in which manliness was next to godliness, erections were considered a jolt of spiritual life force, a sort of divine madness.
