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Updated: Jun 5, 2026

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Assessment of Nerve Injury-Induced Mechanical Hypersensitivity in Rats Using an Orofacial Operant Pain Assay
Published on: July 26, 2022
Summary
Diagnosing orofacial pain is challenging due to overlapping symptoms from various anatomical structures and referred pain. This article reviews common causes of facial pain, excluding temporomandibular joint disorders.
Area of Science:
- Dentistry
- Neurology
- Pain Medicine
Background:
- Orofacial pain diagnosis is complex, involving numerous anatomical structures in a confined region.
- Referred pain from cranial or distant sites and psychiatric factors can complicate diagnosis.
- This review focuses on common orofacial pain etiologies, excluding temporomandibular joint (TMJ) disorders.
Purpose of the Study:
- To summarize common causes of orofacial pain.
- To aid clinicians in diagnosing conditions beyond TMJ disorders.
- To provide a concise overview of differential diagnoses for facial pain.
Main Methods:
- Literature review of common orofacial pain conditions.
- Exclusion of temporomandibular joint and associated musculature disorders.
- Synthesis of information on pain presentation and etiology.
Main Results:
- Identified several common causes of orofacial pain.
- Highlighted the diagnostic challenges posed by referred pain and comorbidities.
- Provided a framework for understanding differential diagnoses.
Conclusions:
- Accurate diagnosis of orofacial pain requires considering diverse anatomical sources and referred pain.
- Understanding common pain etiologies is crucial for effective patient management.
- This review serves as a guide to non-TMJ related orofacial pain conditions.
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