Oral ulceration: causes and management The Pharmaceutical Journal Recurrent Oral Ulceration British Association of Oral and Maxillofacial Surgeons Canker sores are small, painful ulcers that develop inside the mouth. This JAMA Patient Page describes the types of canker sores and how they can be treated. https: ja.ma 4g2Qc3u Let's Chat about Vaping Can vaping cause mouth ulcers? Vaping can cause canker sores or mouth ulcers There are many factors that can contribute to mouth ulcers, also known as canker sores.