SymptomsColdInfluenzaPneumoniaSinus Infection
FeverRareCharacteristic high (100.4-104 °F).  Sudden onset lasts 3-4 days.May or may not be high.Rare
HeadacheOccasionalProminentOccasionalProminent, with pressure in the face
General aches/painsSlightUsual; often quite severe.   Extreme; can last up to a monthOccasionalOccasional
Fatigue and weaknessQuite mildMay occur early and with prominenceMay occur depending on typeNot characteristic
ExhaustionNeverSometimesMay occur depending on typeNot characteristic
Runny, stuffy noseCommonSometimesNot characteristicPostnasal drip, green or gray discharge and congestion
SneezingUsualSometimesNot characteristicSometimes
Sore throatCommonCan become severeNot characteristicNot characteristic
Chest discomfort, coughMild to moderate hacking coughSevereFrequent and may be severeMild to moderate
ComplicationsSinus and ear infectionBronchitis, pneumonia, can be life-threateningWidespread infections of other organs; can be life threatening, especially in elderly or debilitated patients.Can be triggered by allergies or develop after a cold

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