A medical condition almost identical to Kalla-Nohra syndrome and treated with the same medication, though it produces a different result in a specific test, as Doctor Bashir explained to Major Kira.
Pottrik syndrome is a disease whose symptoms and treatment closely match those of Kalla-Nohra syndrome, the incurable condition contracted only by people who were present at the mining accident at the Gallitep labour camp on Bajor.
It is mentioned in the Deep Space Nine episode Duet. A Cardassian passenger calling himself Aamin Marritza arrives at the station needing medication for Kalla-Nohra, which marks him as someone who was at Gallitep. He at first insists that he actually suffers from Pottrik syndrome, which would explain the prescription without placing him at the camp.
Doctor Bashir's tests settle the matter: the two illnesses can be told apart, and the prisoner has Kalla-Nohra. The finding keeps him in a cell and opens the way to his claims to be Gul Darhe'el, and to Kira's discovery of who he really is.