Canker sores are an oral disease that has been linked to factors such as overwork, genetics, hormones, viral or bacterial infections. Many pathogenic bacteria can cause this disease, such as Streptococcus, Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa.
Gastric ulcers, whose occurrence is mainly related to the imbalance between factors such as mucosal damage and mucosal self-defense repair, are one of the common and frequent diseases. The main causes of gastric ulcers include abnormal gastric acid secretion, Helicobacter pylori infection, hormones, stress, non-steroidal anti-inflammatory drugs and so on. In addition, bad lifestyle habits, psychological factors, etc. also play a role in the occurrence and development of gastric ulcers.
Therefore, the causative agents of oral ulcers and gastric ulcers are different.