Taste changes. Individuals with Burning Mouth Syndrome complain of taste changes. Bitter, metallic tastes are the most commonly reported. While this specific taste change is a hallmark of Burning Mouth Syndrome, it is also recognized as a product of many medications, as well as sinusitis. However, patients experience relief once their medication is discontinued or their sinusitis is cured; with Burning Mouth Syndrome, the taste change is constant. Doctors may prescribe an oral rinse in an attempt to remove the bitter and metallic tastes, but it is a short term treatment at best.