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Related Concept Videos

Chronic Pancreatitis I: Introduction01:24

Chronic Pancreatitis I: Introduction

The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
Chronic Pancreatitis I: Introduction01:25

Chronic Pancreatitis I: Introduction

Chronic pancreatitis is a long-standing, relapsing inflammation of the pancreas, characterized by irreversible damage to the gland. It results in progressive destruction of the pancreatic parenchyma, fibrosis, and eventual loss of both exocrine and endocrine function. The disease may evolve gradually after multiple episodes of acute pancreatitis or develop independently.EtiologyChronic pancreatitis can arise from a variety of causes:Alcohol use is the leading cause, accounting for 70–80% of...
Chronic Pharyngitis01:23

Chronic Pharyngitis

Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
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Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Analgesia and Pain Management01:25

Analgesia and Pain Management

Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...

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Related Experiment Video

Updated: Jun 13, 2026

Assessment of Nerve Injury-Induced Mechanical Hypersensitivity in Rats Using an Orofacial Operant Pain Assay
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Assessment of Nerve Injury-Induced Mechanical Hypersensitivity in Rats Using an Orofacial Operant Pain Assay

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Chronic orofacial pain.

Rafael Benoliel1, Yair Sharav

  • 1Faculty of Dentistry, Department of Oral Medicine, Hebrew University-Hadassah, Jerusalem, Israel. benoliel@cc.huji.ac.il

Current Pain and Headache Reports
|April 29, 2010
PubMed
Summary

Chronic orofacial pain (COFP) encompasses various syndromes requiring tailored treatments. This study proposes classifying COFP and headaches together due to shared mechanisms and anatomy.

Area of Science:

  • Orofacial Pain Research
  • Neurology
  • Headache Disorders

Background:

  • Chronic orofacial pain (COFP) is a broad classification for persistent regional pain syndromes.
  • Current understanding necessitates individualized diagnostic and treatment strategies for COFP subtypes.
  • COFP has historically been viewed as distinct from headache disorders.

Purpose of the Study:

  • To categorize the primary types of chronic orofacial pain.
  • To propose a unified classification framework for COFP and headaches.
  • To highlight shared pathophysiological mechanisms between COFP and headaches.

Main Methods:

  • Review and synthesis of existing literature on COFP and headache.
  • Analysis of pathophysiological mechanisms, clinical presentations, and neurovascular anatomy.

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  • Development of a conceptual model for integrated classification.

    • Main Results:

    • Identified three main categories of COFP: musculoskeletal, neurovascular, and neuropathic.
    • Demonstrated significant overlap in underlying mechanisms, clinical features, and neurovascular anatomy between COFP and headaches.
    • Established a basis for considering COFP and headaches as related entities.

    Conclusions:

    • Chronic orofacial pain and headaches share fundamental pathophysiological pathways.
    • A unified classification integrating COFP and headaches is proposed.
    • This integrated approach may refine diagnostic and therapeutic strategies for these conditions.