Medication Overuse Headache | Diagnosis & Treatment
Medication Overuse Headache | Diagnosis & Treatment
Introduction & Epidemiology
Headaches can manifest on their own but are also a common symptom in neck pain patients as more than 60% of patients with a primary neck pain complaint report having concordant episodes of neck pain. Therefore, it’s essential to find out what kind of headache the patient suffers.
To start off let’s differentiate between primary and secondary types of headaches. But what does this mean? Simply put, primary headaches are a “disease themselves” whereas, in secondary headaches, the headache is a symptom of another condition. So primary headaches would be migraines, tension-type headaches & cluster headaches. Secondary-type headaches are headaches caused by tumors, hemorrhage, other trauma, TMJ dysfunction, substance overuse, or neck pain aka the Cervicogenic headache.
Now let’s take a closer look at medication overuse headaches, which are a secondary type headache.
Epidemiology
The prevalence of medication overuse headaches is reported to be 1-2% in the general population. Women are 3 to 4 times more often affected than men and the prevalence is highest at around 40 years of age.
The following figure shows the prevalence of headaches on different continents around the world:
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Clinical Picture & Examination
In order for a headache to qualify as a medication overuse headache it has to fulfill certain criteria (ICHD-III):
A. The headache occurs on ≥15 days/month in a patient with a pre-existing headache disorder
B. Regular overuse for more than 3 months of one or more drugs that can be taken for acute and/or symptomatic treatment of headache. For simple analgesics such as paracetamol or NSAIDs, the intake has to be on 15 days or more per month. In the case of triptans and similar medication, 10 days or more per month is enough to diagnose medication overuse headache
C. Not better accounted for by another headache disorderAs a side note, you should also pay attention to excessive consumption of substances such as caffeine as they can evoke similar headache symptoms.
100% Free Headache Home Exercise Program
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- Interactive online courses from an award-winning team
- CEU/CPD accreditation in the Netherlands, Belgium, US & UK
