Nearly three-quarters of us suffer from periodontal disease, and many do not seek treatment until the damage is irreversible. In some cases, this could be attributed to a fear of dentistry or possibly neglect. However, many are simply not familiar with gum disease symptoms. Dr. Loyd Dowd advises patients on the importance of recognizing gum disease symptoms before the condition advances. There are three main stages of periodontal disease: gingivitis, periodontitis, and advanced periodontitis.