Mouth Ulcer
Free Symptom Checker
with Physician-supervised AI

Reviewed By:

Yoshinori Abe

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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People with these symptoms also use Ubie's symptom checker to find possible causes

  • Oral ulceration

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Content updated on Jan 4, 2023

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

  • Viral mucositis

  • Candidiasis (oral, hands and feet)

    Normal human skin contains bacteria and fungi. Candidiasis occurs when the fungus overgrows and invades the skin. Risk factors include warm moist environments and a weakened immune system.

  • Stomatitis

    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.

  • Uveitis

  • Ulcerative colitis
  • Palmoplantar pustulosis
  • Behcet's disease

Related serious diseases

  • Epilepsy

    Epilepsy is a neurological disorder where brain activity becomes abnormal, causing seizures of varying durations and severities. It can affect people of any age and may be caused by genetic disorders or brain injuries, such as stroke.

  • Chronic subdural hematoma

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Do you have sores or erosions in your mouth?

  • Do you have itchy skin?

  • Do you have any pain or tingling in the affected areas of the skin?

  • Do you have a fever?

Other Related Symptoms

Similar symptoms or complaints

Reviewed By:

Yoshinori Abe

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.

From our team of 50+ doctors

User testimonials

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Ubie is supervised by 50+ medical experts worldwide

Shohei Harase

Shohei Harase, MD

Neurology

Kameda Medical Center, Japan

Yu Shirai

Yu Shirai, MD

Psychiatry

Yotsuya Yui Clinic, Japan

Yoshinori Abe

Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

Bayshore Health Centre, India

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Seiji Kanazawa, MD, PHD

Obstetrics and gynecology (OBGYN)

National Center for Child Health and Development, Japan

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