Understanding Inflammatory Bowel Disease (IBD)
There are two fundamental presentations of inflammatory bowel disease (IBD): ulcerative colitis and Crohn's disease. Both conditions typically manifest with abdominal pain and diarrhea, and frequently include bleeding. Understanding the distinctions and extraintestinal manifestations is key for diagnosis and management.
- Ulcerative colitis usually restricts its involvement to the colon (large intestine).
- Crohn's disease, in contrast, can affect any segment of the gastrointestinal tract, from the oral cavity to the anus, presenting lesions disparate lesions. Characteristically, Crohn's disease involves pathology pathology with noncaseating granulomas caseating, although these histological findings are not always seen on the biopsy biopsy.
While these two pathologies are considered distinct entities, establishing an accurate diagnosis can be complicated, especially in the initial stages. Therefore, the involvement of other organs in the symptomatic process plays a crucial role in differentiating the type of IBD.
Extraintestinal Manifestations of Inflammatory Bowel Disease
Both Crohn's disease and ulcerative colitis can cause symptoms and signs that extend beyond the intestine itself. Skin and oral mucosal alterations can manifest in both, although they are observed more frequently in Crohn's disease. Sometimes, these skin or mucosal manifestations appear before an IBD diagnosis is obtained, prompting the clinician to investigate underlying intestinal causes. In certain patients, they appear synchronously with flares of intestinal inflammation. When the extraintestinal alteration shows a specific association with the intestinal histology, it becomes a diagnostic indicator of great value. mucosa inflammation inflammation histology histology , it becomes a diagnostic indicator of great value.
Classification of Oral Mucosal Signs in IBD
The alterations observed in the facial and oral mucosa associated with inflammatory bowel disease can be grouped into four fundamental categories for study:
- Specific Changes: Those that only present in direct association with intestinal disease and/or exhibit the characteristic histopathology inherent to that condition.
- Nonspecific Changes: Manifestations that occur more frequently in patients with IBD than in the healthy general population, but which also persist in the absence of intestinal disease, and whose pathology is not conclusive for the specific diagnosis of IBD.
- Malabsorption Complications: Sequelae derived from intestinal malabsorption caused by inflammation, resulting in notable deficiencies of essential vitamins and minerals.
- Pharmacological Effects: Adverse reactions or complications derived from medications prescribed for the treatment of the underlying intestinal disease.
The first three categories have significant potential to guide the clinician toward identifying the primary intestinal problem and facilitating a specific and accurate diagnosis.
Characteristic Oral Manifestations of Crohn's Disease
The oral mucosa is frequently compromised in Crohn's disease; up to one-third of patients report oral alterations, a figure that rises even higher among the pediatric population. In some studies, oral manifestations have preceded confirmed intestinal diagnosis in up to 60% of cases, with a predominance observed in male patients.
1. Specific Oral Mucosal Changes: Orofacial Crohn's Disease
In children diagnosed with Crohn's disease, the presentation of orofacial Crohn's disease can be a fundamental early indication that precedes any intestinal sign.
2. Nonspecific Changes in the Mouth
Prompt identification and classification of these manifestations are crucial for improving the prognosis and quality of life for patients with inflammatory bowel disease. A comprehensive evaluation should always consider these systemic extensions of the intestinal pathology.
manifestations in the skin and surrounding facial tissues associated with Crohn's disease:
- Angular cheilitis.
- Aphthous ulcers or aphthous stomatitis: These are reported to affect up to 20-30% of patients with Crohn's disease, although some studies do not confirm an increase compared to the general population. Clinically, they cannot be distinguished from common aphthous ulcers.
- Recurrent abscesses.
- Redness and scaling around the lips.
- Pyostomatitis vegetans: An extremely rare condition in the context of Crohn's disease.
- Dry mouth (xerostomia): Can lead to dental caries, discomfort with dentures, and infection.
- Halitosis (bad breath).
- Frequent vomiting and regurgitation can cause oral pain, and the associated stomach acid can lead to dental erosion.
Oral Manifestations of Ulcerative Colitis
Oral mucosal changes have been documented in certain individuals suffering from ulcerative colitis (UC).
- Specific orofacial changes in Ulcerative Colitis: Pyostomatitis vegetans.
- Nonspecific alterations in the mouth and surrounding skin associated with Ulcerative Colitis:
- Minor and major aphthous ulcers or stomatitis: Reported in a minimum of 10% of cases, they generally worsen during flares of intestinal disease and improve when inflammation is treated. However, their prevalence is unlikely to exceed that of the general population.
- Glossitis (tongue inflammation).
- Cheilitis (lip inflammation).
- Halitosis (bad breath).
In an extensive study conducted in children with ulcerative colitis, only nonspecific changes were observed.
Oral Manifestations Associated with Malabsorption
Malabsorption can be caused by chronic diarrhea, reduced food intake, small intestinal bacterial overgrowth, intestinal surgery, the disease itself, or the drugs used to treat the intestinal conditions. Resulting nutritional deficiencies can manifest orally:
- Folic acid deficiency (common in Crohn's disease with small intestine involvement): Causes a red, sensitive tongue (acute), which becomes shiny and smooth (chronic) (glossitis), and chapped lips (cheilitis).acuteacute.
- Iron deficiency.
- Zinc deficiency: Can cause acrodermatitis enteropathica or similar conditions, oral candidiasis, and glossitis.
- Vitamin A deficiency: Causes the appearance of white patches on the oral mucosa due to keratinization of the mucous membranes.
- B vitamin complex deficiency: Presents as stomatitis-glossitis-angular cheilitis.
- Riboflavin (Vitamin B2, common in Crohn's disease with limited absorption in the small intestine): Causes cheilosis, angular cheilitis, and glossitis.
- Niacin deficiency (Vitamin B3): Manifests as pellagra.
- Vitamin B12 deficiency (frequent in Crohn's disease with small intestine malabsorption): Causes glossitis (fleshy red tongue with flat red patches predominantly on the edges and dorsum), angular cheilitis, mouth ulcers, oral candidiasis, erythematous diffuse mucositis, pale oral mucosa, tongue or mouth pain, burning sensation in the mouth, and decreased taste sensitivity.
- Vitamin C deficiency: Causes scurvy.
- Vitamin K deficiency: Results in coagulation problems and bleeding.
It is essential to recognize these oral signs, as they are frequently early indicators of underlying systemic or nutritional problems derived from inflammatory bowel diseases such as Crohn's disease or ulcerative colitis, and require specific therapeutic intervention.
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Oral Manifestations from Drugs Used in Inflammatory Bowel Disease
The treatment of inflammatory bowel disease (IBD) requires a wide range of medications, including antibiotics, biologics, immunosuppressants, antidiarrheals, and analgesics. Below is an alphabetical list of frequent treatments and their possible associated oral side effects. Consideration of these effects is crucial for the comprehensive management of these patients.
| Medication | Reported Oral Adverse Effects |
|---|---|
| adalimumab (biologic) | Unlike other, angioedema |
| Budesonide (oral steroid) | glossitis, tongue swelling, dry mouth |
| Certolizumab (biologic) | Stevens-Johnson syndrome / shock epidermal necrosis, angioedema |
| Cholestyramine (anion exchange resin) | tongue irritation, bitter taste, dental bleeding, dental caries, erosion enamel erosion, tooth discoloration |
| Cyclosporine (calcineurin tyrosine) | gum hyperplasia |
| Ciprofloxacin (antibiotic) | oral candidiasis, angioedema, Stevens-Johnson syndrome / toxic epidermal necrolysis, loss of taste |
| Colestipol (anion exchange resin) | difficulty swallowing |
| Diphenoxylate and atropine (antispasmodics) | dry mouth, lip swelling, changes or loss of taste |
| Infliximab (biologic) | infections, angioedema |
| Loperamide (antidiarrheal) | dry mouth, Stevens-Johnson syndrome / toxic epidermal necrolysis, angioedema |
| Mesalamine (anti-inflammatory)vasoconstriction) | sore throat, oral candidiasis, dry mouth, stomatitis, taste alteration |
| Methotrexate (folic acid antagonist) | stomatitis, gingivitis, pharyngitis |
| Metronidazole (antibiotic) | unpleasant metallic taste, hairy tongue, glossitis, stomatitis, oral candidiasis, dry mouth |
| Prednis(ol)one (oral steroid) | oral candidiasis (canker sores) |
| Propantheline (antispasmodic) | dry mouth, angioedema, loss of taste |
| Sulfasalazine (anti-inflammatory) | stomatitis, Stevens-Johnson syndrome / toxic epidermal necrolysis, taste alteration, alteration of folic acid absorption |
| Tacrolimus (calcineurin inhibitor) | oral candidiasis, aphthous ulcers in the mouth, Stevens-Johnson syndrome / toxic epidermal necrolysis, angioedema |
It is important to note that azathioprine and mycophenolate mofetil, drugs frequently indicated for the chronic management of inflammatory bowel disease, have not registered direct adverse oral cavity side effects according to available reports. Constant monitoring of oral health is a fundamental part of pharmacological treatment for IBD patients.
