Reviewed By:
Luri Lee, DMD (Dentistry)
Dr. Luri Lee graduated from Boston University with a Bachelor of Arts in Psychology and Biology. She then continued her education at Boston University Henry M. Goldman School of Dental Medicine where she graduated Summa Cum Laude and was inducted into the Omicron Kappa Upsilon National Dental Honor Society. During her time in dental school, Dr. Lee was the recipient of the Spencer N. Frankl Scholarship for her strong academic performance and active participation in the school and community. Following dental school, Dr. Lee stayed at Boston University to complete a one year Advanced Education in General Dentistry residency program. In 2020 Dr. Lee was recognized among the “10 Under Ten” by the Massachusetts Dental Society for her contributions to the dental community and her volunteer work in Panama. Dr. Lee is licensed to practice in Massachusetts and is a member of the American Dental Association, Massachusetts Dental Society and Academy of General Dentistry.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Content updated on Apr 4, 2024
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With an easy 3-min questionnaire , Ubie's AI-powered system will generate a free report on possible causes.
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Ulcers in the mouth but they don't hurt
Sores in the mouth
Sores in the mouth but they don't hurt
Oral ulceration
Painless ulcers in my mouth
Painless sores in my mouth
Mouth ulcers
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About the Symptom
An oral ulcer is a sore that develops in the soft tissue lining of the gums, tongue, inner cheeks, lips or palate.
When to see a doctor
Seek professional care if you experience any of the following symptoms
Disorder of consciousness
Altered mental status (delirium)
Visual field defect
Seizure attack
Impossible to walk normally
Repeated fever above 38 ℃
Head injury
Fainting with loss of consciousness
Involuntary movements
Possible Causes
Generally, Mouth ulcer can be related to:
A rare autoimmune disease that causes inflammation in blood vessels throughout the body. Symptoms may include mouth and genital sores, as well as eye inflammation. As the disease progresses, joints and internal organs could also be affected.
Inflammation of the mouth surface causes ulcers. Various factors can cause this, such as vitamin deficiencies, medications, and autoimmunity (the body's immune system attacking itself). Often, no clear cause is found, and the ulcers heal on their own.
Viral Enanthem
A viral mucosal rash is a skin rash that occurs in association with viral infections, often serving as a diagnostic clue.
Burn/Scald of Roof of Mouth
Related serious diseases
Sometimes, Mouth ulcer may be related to these serious diseases:
Acute HIV infection occurs in some people during the first 4 weeks after contracting the HIV virus. The virus rapidly attacks immune cells and causes fever, headache, and sometimes a rash. The patient is highly contagious during this time as the viral load is high. Risk factors for transmitting HIV include unprotected sexual activity and contaminated needle stick injuries (e.g., via tattoos or sharing needles). Rarely, it is transmitted through the transfusion of blood products.
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
Do you have mouth sores or erosions?
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Developed by doctors.
Find Similar Symptoms
References
Akintoye SO, Greenberg MS. Recurrent aphthous stomatitis. Dent Clin North Am. 2014 Apr;58(2):281-97. doi: 10.1016/j.cden.2013.12.002. Epub 2014 Jan 21. PMID: 24655523; PMCID: PMC3964366.
Reviewed By:
Luri Lee, DMD (Dentistry)
Dr. Luri Lee graduated from Boston University with a Bachelor of Arts in Psychology and Biology. She then continued her education at Boston University Henry M. Goldman School of Dental Medicine where she graduated Summa Cum Laude and was inducted into the Omicron Kappa Upsilon National Dental Honor Society. During her time in dental school, Dr. Lee was the recipient of the Spencer N. Frankl Scholarship for her strong academic performance and active participation in the school and community. Following dental school, Dr. Lee stayed at Boston University to complete a one year Advanced Education in General Dentistry residency program. In 2020 Dr. Lee was recognized among the “10 Under Ten” by the Massachusetts Dental Society for her contributions to the dental community and her volunteer work in Panama. Dr. Lee is licensed to practice in Massachusetts and is a member of the American Dental Association, Massachusetts Dental Society and Academy of General Dentistry.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
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