Differential Diagnosis for Ulcer Mouth
- Single most likely diagnosis
- Aphthous ulcers: These are the most common cause of mouth ulcers and are characterized by small, painful, recurrent ulcers that can appear on the tongue, gums, or inside the cheeks. They are often triggered by stress, minor mouth injury, or certain foods.
- Other Likely diagnoses
- Oral herpes (HSV-1): This viral infection can cause painful ulcers in the mouth, often accompanied by fever and swollen lymph nodes.
- Traumatic ulcers: Accidental bites, dental work, or other injuries can cause ulcers in the mouth.
- Denture-related ulcers: Poorly fitting dentures can cause irritation and ulcers in the mouth.
- Oral lichen planus: A chronic inflammatory condition that can cause white patches and ulcers in the mouth.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Oral cancer: Although less common, ulcers in the mouth can be a sign of oral cancer, particularly if they are persistent, grow, or bleed easily.
- Tuberculosis: In rare cases, TB can cause ulcers in the mouth, especially in immunocompromised individuals.
- Syphilis: The secondary stage of syphilis can cause mouth ulcers, among other symptoms.
- Rare diagnoses
- Behçet's disease: A rare condition that causes inflammation throughout the body, including mouth ulcers.
- Pemphigus: A group of rare skin disorders that can cause blisters and ulcers in the mouth.
- Erythema multiforme: A rare skin condition that can cause ulcers in the mouth, often triggered by infections or medications.