Sinusitis describes a range of unpleasant and sometimes debilitating symptoms that include nasal and sinus inflammation, congestion, cough, runny nose, difficulty breathing, and a reduced sense of smell.

CNN: Sinus trouble? Secondhand smoke may be to blame

Its fans will tell you that it relieves a variety of ills--from asthma, hay fever and sinus infections to chronic pain, arthritis, inflammation and migraine.

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