The American Academy of Allergy, Asthma & Immunology (AAAAI) has issued warning regarding sinusitis. Doctors say that that if stuffy nose, headache and other symptoms of cold persist for more than two weeks, it may be sinusitis.
Sinusitis is generally initiated by a viral common cold affecting the nose. The viruses can spread to the sinuses and pave way for a secondary bacterial infection and subsequent acute sinusitis. Its major symptoms are a green or gray nasal discharge, foul tasting post-nasal drip, facial pain/pressure or light fever.