Identify one sign of a dental abscess.

A swelling or painful bump on the gum is a classic sign of a dental abscess. This condition occurs when there is an accumulation of pus caused by a bacterial infection in the tooth or the surrounding gums. The inflammation and resultant pressure from the pus lead to noticeable swelling, which can often be painful and tender to the touch.

While bleeding gums may indicate gum disease or another dental issue, it is not a definitive sign of an abscess. Tooth discoloration can suggest decay or other problems, but it does not specifically signify an abscess. Halitosis, or bad breath, can occur in many dental conditions, including abscesses, but it is not a direct indicator like the localized swelling and pain that characterize an abscess.

Overall, the presence of a painful bump or swelling on the gum is critical for identifying a dental abscess and warrants prompt attention to prevent further complications.