Mouth ulcers | Symptom Checker
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Let's see if we can figure out what's causing your mouth ulcers.
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What causes mouth ulcers? 25 possible conditions

See a list of possible causes in order from the most common to the least.

21

Leishmaniasis

Leishmaniasis is a parasitic disease caused by the Leishmania parasite found in sand flies.

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22

Gonorrhea

Gonorrhea is a sexually transmitted disease that affects warm, moist areas of the body. Early symptoms include pain when urinating and discharge.

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23

Temporal Arteritis

Temporal arteritis occurs when the temporal arteries, which supply blood to the head and brain, become inflamed or damaged.

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24

Celiac Disease (Gluten Intolerance)

Celiac disease is a digestive disorder caused by an abnormal immune reaction to gluten. Learn about celiac disease systems, diagnosis, and treatment.

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25

Secondary Syphilis

Secondary syphilis is the second stage of this highly contagious sexually transmitted infection. Learn about the symptoms and treatments for secondary syphilis.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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