What autoimmune disease causes ulcers in the mouth
What autoimmune disease causes ulcers in the mouth Autoimmune diseases are conditions in which the body’s immune system mistakenly attacks its own tissues, leading to a variety of symptoms and complications. One of the common manifestations of certain autoimmune disorders is the development of ulcers in the mouth, which can significantly affect a person’s quality of life. Among the autoimmune diseases associated with oral ulcers, pemphigus vulgaris and Behçet’s disease are the most prominent, but others also play a role.
Pemphigus vulgaris is a rare, potentially life-threatening autoimmune disorder characterized by the formation of blistering lesions on the skin and mucous membranes, including the mouth. It occurs when the immune system produces abnormal antibodies that target desmogleins—proteins essential for cell-to-cell adhesion within the skin and mucous membranes. The disruption of these connections leads to the formation of painful blisters and erosions, often first noticed as ulcers in the oral cavity. These ulcers can be recurrent and resistant to typical treatments, making early diagnosis and management crucial.
Behçet’s disease is another notable autoimmune condition that frequently causes oral ulcers. It is a chronic, multisystem disorder characterized by recurrent aphthous ulcers, skin lesions, and sometimes more serious complications involving the eyes, joints, and blood vessels. The exact cause of Behçet’s disease remains unknown, but it involves an abnormal immune response that causes inflammation of blood vessels (vasculitis). Oral ulcers in Behçet’s disease are often painful, shallow, and recurrent, typically appearing on the inside of the lips, cheeks, and tongue. These ulcers can be similar in appearance to canker sores but tend to last longer and may be more numerous.
Other autoimmune diseases that can cause oral ulcers include systemic lupus erythematosus (SLE) and Crohn’s disease. SLE is a complex autoimmune disorder that can affect multiple organs, including the mucous membranes. Mouth ulcers in SLE patients tend to be non-specific but can be persistent and resistant to conventional treatments. Crohn’s disease, primarily known as a gastrointestinal disorder, can also involve the mouth, leading to aphthous-like ulcers that may be deep and painful.

The diagnosis of autoimmune-related oral ulcers involves a combination of clinical examination, patient history, and laboratory tests. Biopsy and immunofluorescence studies are often necessary to confirm conditions like pemphigus vulgaris. Managing these ulcers requires a multidisciplinary approach, including immunosuppressive medications such as corticosteroids, immunomodulators, and sometimes biological agents to suppress abnormal immune activity and promote healing.
In addition to medical therapy, patients are advised to maintain good oral hygiene, avoid spicy or acidic foods that can irritate ulcers, and use topical agents to alleviate pain. Early detection and treatment are essential to prevent complications and improve quality of life.
Understanding the link between autoimmune diseases and oral ulcers highlights the importance of consulting healthcare professionals for persistent or recurrent mouth ulcers. Accurate diagnosis can lead to targeted therapy, reducing discomfort and addressing the underlying autoimmune condition effectively.









