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Related Concept Videos

Prescription, Nonprescription and Orphan Drugs01:02

Prescription, Nonprescription and Orphan Drugs

Prescription drugs require a prescription from a medical practitioner and can only be obtained from a pharmacy. They have many applications, including treating pain, anxiety, and hypertension.
The misuse and addiction to prescription drugs is a growing problem that can affect people of all age groups, specifically teenagers. This can happen when prescription medications are used in ways not intended by the prescriber, such as taking someone else's prescription or using medication for...
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...
Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
Drug Therapy01:28

Drug Therapy

The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
Antianxiety Medications
Drug Classes and Categories01:25

Drug Classes and Categories

Drugs can be classified according to their chemical composition or their intended therapeutic application. For instance, anti-infective agents that possess the ability to eliminate pathogens or suppress their growth and reproduction can be grouped based on the organisms they target or their chemical structure. Furthermore, drugs can be divided into prescription, nonprescription, or controlled substances. Prescription medications, such as antibiotics, require oversight from a licensed healthcare...
Additional Routes of Drug Administration01:18

Additional Routes of Drug Administration

Choosing the appropriate route of drug administration is significantly influenced by two key factors: the therapeutic objectives and the inherent properties of the drug being used.
Administering drugs via inhalation allows for the direct delivery of gaseous, volatile substances or droplets to different parts of the respiratory tract. One of the advantages of the inhalation route is the rapid absorption of drugs into the circulatory system, which is possible because of the large surface area of...

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Related Experiment Video

Updated: Jul 15, 2026

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
10:39

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Published on: June 2, 2014

Medication-overuse headache: where are we now?

Zaza Katsarava1, Rigmor Jensen

  • 1Department of Neurology, University of Essen, Essen, Denmark. zaza.katsarava@uni-due.de

Current Opinion in Neurology
|May 15, 2007
PubMed
Summary

Medication-overuse headache (MOH) diagnosis criteria have been updated, no longer requiring improvement after drug withdrawal. Overuse of acute headache medications is a primary risk factor for chronic headache development, necessitating predictive models for early intervention.

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Last Updated: Jul 15, 2026

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Area of Science:

  • Neurology
  • Clinical Medicine
  • Epidemiology

Background:

  • Medication-overuse headache (MOH) is a prevalent condition characterized by chronic headaches resulting from the overuse of acute headache medications.
  • Previous diagnostic criteria mandated improvement after medication withdrawal, a requirement now broadened by recent updates.
  • Understanding the pathophysiology and risk factors for MOH is crucial for effective management and prevention.

Purpose of the Study:

  • To summarize recent findings and new concepts in medication-overuse headache research.
  • To review updated classification criteria for medication-overuse headache.
  • To highlight advancements in understanding headache chronicity and risk factors.

Main Methods:

  • Review of recent scientific literature on medication-overuse headache.
  • Analysis of findings from epidemiological and imaging studies.
  • Evaluation of revised International Headache Society classification criteria.

Main Results:

  • The International Headache Society has updated the diagnostic criteria for medication-overuse headache, broadening the concept and removing the mandatory requirement for improvement after drug withdrawal.
  • Large-scale population-based studies confirm that overuse of acute headache medications is a significant risk factor for developing chronic headache.
  • Neuroimaging studies have provided novel insights into the pathophysiology underlying headache chronicity.

Conclusions:

  • Recent research offers enhanced understanding of the pathophysiology of medication-overuse headache.
  • Epidemiological evidence underscores the need for predictive models to identify high-risk patients for early intervention.
  • Early intervention strategies are essential to prevent the development and progression of chronic headache conditions.