2.2K views · 23 reactions | Gingivitis causes and symptoms | Gum swelling Straight from your Specialist Doctor Swelling of gums is called gingivitis. It is caused by infection due to microorganism around gum or brushing teeth properly is main reason for this. You will have gum bleeding and swelling. You will have bad breath also. It is treated by scaling initially then you have to maintain good oral health and general health. | Doctors' Circle | Facebook