Because fissured tongue is associated with various causes and underlying conditions, the effect on the body varies. Although fissured tongue is typically asymptomatic, glossitis, pain, and bad breath may result from the condition. When glossitis occurs, the tongue swells and changes color, and the little projections on the surface disappear. This gives the tongue a smooth, glossy look. Bad breath may result when food becomes lodged in the fissured areas. Exposure to irritants may exasperate the symptoms and cause pain to the affected tongue.