The prevalence of mouth ulcers (recurrent aphthous stomatitis , RAS) has been estimated at between 5 – 60%. They can be painful and slow to heal.  There are three recognized forms; minor, major and herpetiform.  The peak age at onset is between 10 and 19 years of age but they can persist through adulthood. The … Continue reading No single systemic treatment was found to be effective for treatment of mouth ulcers