Aleksandr Solzhenitsyn described “soul mange” in The Gulag Archipelago.
And in addition you are constantly gripped by fear: of slipping off even that pitifully low level to which you are clinging, of losing your work which is still not the hardest, of coming a cropper on a prisoner transport, of ending up in a Strict Regimen Camp. And on top of that, you got beaten if you were weaker than all the rest, or else you yourself beat up those weaker than you. And wasn’t this corruption? Soul mange is what A. Rubailo, an old camp veteran, called this swift decay under external pressure.
The Gulag Archipelago, Volume 2, pp 620-621