Canker sores are painful but not contagious, explains WebMD. The cause of canker sources is unknown, but they may develop due to stress, fatigue, genetics, food allergies or injury. They may also be caused by wearing dental braces, lacking certain vitamins or minerals, eating acidic foods or having a menstrual cycle. Approximately 20 percent of people get canker sores, states HowStuffWorks. Women are more likely to get canker sores than men, and some people have the propensity to get canker sores repeatedly.
There are simple canker sores and complex canker sores, notes Mayo Clinic. Simple canker sores can appear three or four times a year, last up to a week and generally occur in individuals between 10 and 20 years old. Complex canker sores are less common and usually occur in those who have experienced canker sores before. Though treatment is not usually needed for minor canker sores, more major canker sores may need medical care. Treatment options include mouth rinses, nutritional supplements, oral medications, topical pastes, a cautery of sores or vitamins such as B-6, B-12, folate or zinc.Learn more about Wounds & Bruises