A chronic illness contracted only by those present at a mining accident at the Gallitep labour camp on Bajor, which brings the Cardassian Aamin Marritza to Kira's attention.
Kalla-Nohra Syndrome drives the Deep Space Nine episode Duet. A Cardassian passenger asks the station for medication, and Kira recognises the condition at once: every known case, Bajoran or Cardassian, goes back to a single accident at Gallitep.
She has him arrested as a war criminal. He first gives the name Marritza and claims to be a filing clerk treated for Pottrik Syndrome, a similar ailment that uses the same drug; Bashir's tests show that he has Kalla-Nohra.
The prisoner then announces that he is Gul Darhe'el, the camp commandant. Records show that Darhe'el was away from Gallitep on the day of the accident and could not have the disease, proving that the man really is Marritza.