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â¢ Sinus infection involves the sinus cavities of the skull, whereas the cold only involves the mucous membranes. â¢ Sinus infection is mainly due to bacterial, whereas the cold is due to viral agents. â¢ The headache in sinus infection is much heavier than in the cold, with the heaviness aggravating when bending forward.
How to Tell the Difference Between a Cold and the Flu. The cold and flu are both respiratory illnesses, but they are caused by different types of viruses. Flu symptoms. usually come on quickly (within 3-6 hours) and consist of a fever, body aches, dry cough, and extreme. tiredness. Cold symptoms are less severe and people experience a stuffy nose, productive cough, slight.