Oral Manifestations of Systemic Diseases

Endocrine & Nutritional - Sweet & Sour Signs

• Endocrine Disorders:

  • Diabetes Mellitus: Severe periodontitis, poor wound healing, oral candidiasis, xerostomia, sialosis (parotid), acetone breath.
  • Thyroid:
    • Hypo: Macroglossia, delayed tooth eruption, gingival swelling.
    • Hyper: ↑Caries risk, alveolar osteoporosis, early tooth eruption.
  • Hyperparathyroidism: "Brown tumors" (osteoclastomas) in jaws, loss of lamina dura, "ground glass" bone.

    ⭐ Brown tumors of hyperparathyroidism are giant cell lesions, radiolucent, and can cause bone expansion.

  • Addison's Disease: Diffuse/patchy mucosal hyperpigmentation (bluish-black).
  • Acromegaly: Macroglossia, mandibular prognathism, interdental spacing.

• Nutritional Deficiencies:

  • Vitamin B12/Folate: Hunter's glossitis (atrophic, beefy, smooth), angular cheilitis, recurrent aphthous ulcers.
  • Vitamin C (Scurvy): Scorbutic gingivitis (spongy, friable, bleeding gums), loose teeth, petechiae.
  • Iron: Atrophic glossitis (pale, smooth), angular cheilitis, koilonychia. Plummer-Vinson syndrome (dysphagia, glossitis, anemia).
  • Vitamin D: Enamel hypoplasia, delayed tooth eruption, osteomalacia of jaw.
  • Vitamin B2 (Riboflavin): Angular cheilitis, glossitis (magenta tongue), stomatitis.
  • Vitamin B3 (Niacin - Pellagra): Fiery red "beefy" glossitis, stomatitis, gingivitis. 📌 "3Ds + Oral" (Dermatitis, Diarrhea, Dementia).

Hematologic & GI - Crimson Cavity Tales

• Anemias:
  • Iron Deficiency: Atrophic glossitis (smooth, red), angular cheilitis, pallor. Plummer-Vinson Syndrome (PVS): dysphagia, anemia, esophageal webs. 📌 PVS: "DIE" (Dysphagia, Iron deficiency, Esophageal webs).
  • B12/Folate Deficiency: Hunter's glossitis (fiery red, sore tongue), aphthous ulcers.
• Leukemia: Gingival hyperplasia (esp. AML M4/M5), ulcerations, petechiae, bleeding, infections.
• Thrombocytopenia: Petechiae, ecchymoses, spontaneous gingival bleeding.
• Inflammatory Bowel Disease (IBD):
  • Crohn's Disease: Cobblestone oral mucosa, linear ulcers, lip swelling (granulomatous cheilitis), pyostomatitis vegetans.
  • Ulcerative Colitis (UC): Aphthous-like ulcers, pyostomatitis vegetans (less common).
• Celiac Disease: Dental enamel defects, recurrent aphthous stomatitis (RAS), atrophic glossitis.
• Peutz-Jeghers Syndrome: Perioral & oral melanotic macules.
• Gardner Syndrome: Jaw osteomas, supernumerary/impacted teeth, odontomas.
• Liver Disease (Cirrhosis): Jaundice (icteric mucosa), fetor hepaticus, bleeding tendencies, glossitis.

⭐ Crohn's disease frequently presents with oral manifestations such as cobblestone appearance of the buccal mucosa, deep linear ulcers, and persistent labial swelling.

Immunologic & Dermatologic - Autoimmune Oral Onslaught

• Pemphigus Vulgaris (PV)

  • Autoimmune; intraepithelial bullae.
  • Antibodies: Anti-Desmoglein 1 & 3.
  • Oral: Often first sign; painful erosions, flaccid bullae.
  • Nikolsky's sign: Positive.
  • Histo: Acantholysis, Tzank cells.
  • ⭐ > Tzank cells (acantholytic epithelial cells) are seen in Pemphigus Vulgaris smears.

• Mucous Membrane Pemphigoid (MMP) / Cicatricial Pemphigoid

  • Autoimmune; subepithelial bullae; results in scarring.
  • Targets: BP180 (Type XVII collagen), BP230, Laminin-5.
  • Oral: Desquamative gingivitis, tense bullae, erosions.
  • Ocular: Symblepharon (⚠️ risk of blindness).

• Oral Lichen Planus (OLP)

  • T-cell mediated; chronic inflammation.
  • Forms: Reticular (Wickham's striae - common), erosive (painful), atrophic, bullous.
  • Sites: Bilateral buccal mucosa, tongue, gingiva.
  • Malignant transformation risk: ~1% (especially erosive/atrophic forms).
  • 📌 Skin lesions: 6 P's (Purple, Pruritic, Polygonal, Planar, Papules, Plaques).

• Systemic Lupus Erythematosus (SLE)

  • Oral: Painless ulcers (often palate), lichenoid lesions, petechiae, cheilitis.
  • Discoid LE (DLE): Discoid plaques, central atrophy, hyperkeratotic border.

• Behçet's Disease

  • Classic triad: Recurrent oral aphthae (major/minor/herpetiform), genital ulcers, uveitis.
  • Pathergy test: Positive.

• Erythema Multiforme (EM)

  • Acute immune reaction; often post-HSV/Mycoplasma or drug-induced.
  • Oral: Hemorrhagic crusting of lips; widespread erosions & bullae.
  • Skin: Characteristic "target" or "iris" lesions.

High‑Yield Points - ⚡ Biggest Takeaways

• Diabetes Mellitus: ↑ risk of severe periodontitis, oral candidiasis, xerostomia, delayed healing.
• Leukemia (AML): Gingival hyperplasia, spontaneous bleeding, ulcers, petechiae.
• Iron Deficiency Anemia: Atrophic glossitis (smooth red tongue), angular cheilitis, mucosal pallor.
• HIV/AIDS: Oral candidiasis, hairy leukoplakia (EBV, lateral tongue), Kaposi's sarcoma, NUG.
• Pemphigus Vulgaris: Oral bullae/erosions often first sign, positive Nikolsky's sign.
• Addison's Disease: Oral mucosal hyperpigmentation (brownish macules).
• Crohn's Disease: Cobblestone oral mucosa, aphthous-like ulcers, lip swelling.