Atrophic Glossitis: Clinical Presentation, Diagnostic Evaluation, and Outcome – A Case Report

Abstract

Atrophic glossitis is a clinical condition characterized by the loss of lingual papillae, resulting in a smooth, glossy, and often erythematous tongue surface. It is frequently associated with underlying systemic conditions, particularly nutritional deficiencies such as iron, vitamin B12, and folate deficiency, as well as chronic diseases and autoimmune disorders. Patients typically present with tongue discomfort, burning sensation, altered taste, and difficulty in eating. Early recognition is crucial, as atrophic glossitis often serves as a clinical marker of systemic disease. This case report describes a 35-year-old female presenting with symptomatic atrophic glossitis secondary to vitamin B12 deficiency. It highlights the clinical features, diagnostic approach, management, and favorable outcome following targeted therapy.

Introduction

Atrophic glossitis, also referred to as “bald tongue,” is characterized by partial or complete atrophy of the filiform and fungiform papillae, leading to a smooth and shiny appearance of the tongue. The condition is not a disease entity in itself but rather a manifestation of underlying systemic or local pathology.

Common etiologies include nutritional deficiencies (iron, vitamin B12, folate), chronic infections, autoimmune conditions such as Sjögren’s syndrome, and systemic illnesses like celiac disease. In many cases, atrophic glossitis may be the first visible sign of an underlying deficiency state, particularly megaloblastic anemia.

The condition can significantly impact quality of life due to associated symptoms such as burning sensation (glossodynia), dysgeusia, and oral discomfort. Therefore, identifying the underlying cause is essential for appropriate management and prevention of complications.

Case Report

Patient History

A 35-year-old female presented to the outpatient department with complaints of a persistent burning sensation of the tongue for the past 2 months. The patient also reported increased sensitivity to spicy foods, altered taste perception, and difficulty in consuming hot beverages.

She noticed a gradual change in the appearance of her tongue, which had become smooth and reddish over time. There was associated fatigue, generalized weakness, and occasional dizziness. No history of fever, oral ulcers, or recent infections was reported.

Her dietary history revealed a strict vegetarian diet for several years. There was no history of alcohol consumption, tobacco use, or recent medication intake. She had no known chronic illnesses or prior similar episodes.

Clinical Examination

General Examination

• Pale appearance suggestive of anemia
• Mild fatigue
• No lymphadenopathy

Oral Examination

• Smooth, glossy tongue with loss of papillae
• Diffuse erythema over the dorsal surface
• No ulceration or fissuring
• Mild tenderness on palpation

Vital Signs

• Blood pressure: 110/70 mmHg
• Pulse rate: 96/min
• Temperature: Afebrile

Clinical Evaluation

Differential Diagnosis

• Atrophic glossitis due to nutritional deficiency
• Oral candidiasis
• Lichen planus
• Geographic tongue
• Burning mouth syndrome

The absence of white plaques, ulceration, or migratory lesions, along with systemic symptoms, favored a nutritional etiology.

Investigations

Laboratory Findings

1. Complete Blood Count (CBC)
   • Hemoglobin: Reduced
   • Mean corpuscular volume (MCV): Elevated (macrocytosis)
2. Serum Vitamin B12 Levels
   • Significantly reduced
3. Serum Folate Levels
   • Within normal limits
4. Iron Studies
   • Normal
5. Peripheral Blood Smear
   • Macrocytic red blood cells
   • Hypersegmented neutrophils
6. Serum Homocysteine
   • Elevated
7. Oral Swab
   • Negative for fungal elements

Diagnosis

Atrophic glossitis secondary to vitamin B12 deficiency (megaloblastic anemia)

Management and Outcome

Treatment Plan

Nutritional Therapy

• Intramuscular vitamin B12 (cyanocobalamin) injections initiated
• Transition to oral supplementation after stabilization

Dietary Counseling

• Inclusion of fortified foods and dairy products
• Education regarding long-term nutritional balance

Symptomatic Management

• Topical oral gels for symptomatic relief
• Advice to avoid spicy and irritant foods

Follow-Up and Clinical Progress

After 2 Weeks

• Reduction in burning sensation
• Improved appetite

After 1 Month

• Partial restoration of tongue papillae
• Improvement in energy levels

After 3 Months

• Near-complete resolution of glossitis
• Normalization of hematological parameters

The patient remained asymptomatic on follow-up with continued nutritional supplementation.

Discussion

Atrophic glossitis is an important clinical sign that frequently reflects an underlying systemic disorder, most commonly nutritional deficiencies. Among these, vitamin B12 deficiency is a well-recognized and clinically significant cause, leading to impaired DNA synthesis, ineffective epithelial regeneration, and subsequent mucosal atrophy. Deficiencies of iron and folate may also contribute, either independently or in combination, further disrupting epithelial integrity and accelerating papillary loss. In many patients, atrophic glossitis may precede hematological manifestations, making it an early and valuable diagnostic clue for systemic disease.

The tongue epithelium is characterized by rapid cellular turnover, rendering it particularly vulnerable to deficiencies in essential nutrients required for cell proliferation and maturation. As a result, depletion of these nutrients leads to progressive atrophy of the filiform and fungiform papillae, producing the classic smooth, glossy, and erythematous appearance of the tongue. This structural change is often accompanied by symptoms such as burning sensation, pain, and altered taste perception. Additionally, chronic mucosal atrophy may increase susceptibility to secondary infections and further exacerbate oral discomfort, underscoring the importance of early identification and targeted management.

Pathophysiology

The development of atrophic glossitis in vitamin B12 deficiency involves:

• Impaired DNA synthesis affecting epithelial cell turnover
• Atrophy of lingual papillae
• Inflammation of the mucosal surface
• Associated neuropathy contributing to burning sensation

Risk Factors

• Vegetarian or vegan diet
• Malabsorption syndromes
• Pernicious anemia
• Chronic gastrointestinal disorders
• Elderly population

Clinical Features

• Smooth, glossy tongue
• Loss of papillae
• Burning sensation (glossodynia)
• Altered taste (dysgeusia)
• Sensitivity to spicy foods

Diagnostic Approach

Step 1: Clinical Recognition

• Identification of characteristic tongue appearance

Step 2: Laboratory Evaluation

• CBC and red cell indices
• Vitamin B12, folate, and iron levels

Step 3: Exclusion of Other Causes

• Fungal infections
• Autoimmune conditions
• Local oral pathologies

Management Strategies

Etiological Treatment

• Correction of underlying deficiency

Supportive Care

• Oral hygiene maintenance
• Avoidance of irritants

Long-Term Monitoring

• Regular follow-up for recurrence
• Monitoring hematological parameters

Complications

If Untreated:

• Persistent oral discomfort
• Severe anemia
• Neurological complications (in B12 deficiency)

Prognosis

• Excellent with early diagnosis and treatment
• Rapid symptomatic relief with supplementation
• Full mucosal recovery in most cases

Conclusion

Atrophic glossitis is a clinically significant condition that often serves as an early indicator of systemic nutritional deficiencies, particularly vitamin B12 deficiency. This case highlights the importance of thorough clinical examination and targeted investigations in identifying the underlying cause.

Prompt treatment with vitamin supplementation leads to rapid resolution of symptoms and prevents potential complications. Clinicians should maintain a high index of suspicion when evaluating patients with oral mucosal changes, as early intervention ensures optimal outcomes and improved quality of life.

References

1. Green R, et al. Vitamin B12 deficiency. https://pubmed.ncbi.nlm.nih.gov/18650452/
2. Allen LH. Causes of vitamin B12 deficiency. https://pubmed.ncbi.nlm.nih.gov/17023711/
3. Reamy BV, et al. Common tongue conditions in primary care. https://pubmed.ncbi.nlm.nih.gov/20187598/
4. Ship JA. Atrophic glossitis and oral manifestations of systemic disease. https://pubmed.ncbi.nlm.nih.gov/10415729/
5. Langan RC, Zawistoski KJ. Update on vitamin B12 deficiency. https://pubmed.ncbi.nlm.nih.gov/24506115/
6. Field EA, Allan RB. Oral manifestations of hematological disorders. https://pubmed.ncbi.nlm.nih.gov/16908627/

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