You might have a sinus headache. A sinus headache is caused by inflammation and congestion in the sinuses, which are air-filled spaces in the skull around the nose, forehead, and cheeks.

Headaches on the right side can stem from tension, migraines, cluster headaches, or sinus infections. Read on to know more.

Given the increasing traffic congestion in cities, this is indeed a very timely topic that affects citizens and businesses and raises many relevant issues some of which are not self-evident.