The "Truly Madly Deeply" singer shared a photo of his swollen jaw and X-ray imagery on Instagram, explaining he had "a terrible accident." Hayes wrote in the caption that on March 17, exactly two ...

A lump under your jaw could be a swollen lymph node, or it could also be another health condition that warrants investigation, such as a growth or cyst. A lump on your jawline that is soft and can ...