1. An apparatus for identifying different indications of a patient, the apparatus comprising a sensor configured to sense signals indicative of a patient's breathing; a processing unit configured to process and/or analyze the signals by generating flow and snore channel signals; a snore detection module configured to calculate a snoring index based on the flow and snore channel signals; an Obstructive Sleep Apnea (OSA) detection module configured to calculate an apnea/hypopnea index based on the flow channel signal; a periodic breathing and/or Cheyne-Stokes (CS) detection module configured to calculate a periodic breathing index and/or CS index based on the flow channel signal and output from the OSA detection module; and a display configured to display data related to output from the snore, OSA, and periodic breathing and/or CS detection modules.