Rebound headaches (painkiller headaches)
Rebound headaches, also called painkiller headaches, are headaches cause by the overuse of pain-relieving medication.
Around 1 in 10 headaches may be caused by painkiller use, according to some estimates.
Follow the instructions
While over-the-counter pain relievers are helpful in reducing headache pain, they should be taken with caution because they could actually make your headaches worse if they are not taken correctly. The overuse, or misuse, of pain relievers - exceeding the recommended dosage on the label or not following your doctor's advice - can cause a 'rebound' into another headache.
When the pain relief medication wears off, you may experience a withdrawal reaction. This may prompt you to take more medication, which only leads to another headache and the desire to take yet more medication. And so the cycle continues until you start to suffer from chronic daily headaches with more severe headache pain and more frequent headaches.
Using too much pain relief medication appears to interfere with the brain centres that regulate the flow of pain messages to the nerves, worsening headache pain.
This rebound syndrome may be more likely if there if a medication contains caffeine.
While it can be beneficial, caffeine in medication, combined with caffeine from other sources such as tea, coffee, juice drinks or chocolate, makes you more vulnerable to a rebound headache.
In addition to rebound headaches, using pain relievers too often can lead to addiction, more intense pain when the medication wears off and possible serious side effects.
Which pain relievers are responsible for causing rebound headaches?
Many commonly used painkillers, when taken in larger amounts, taken too often, or taken for a long period of time can cause rebound headaches. These include:
- Aspirin, ibuprofen and other non-steroidal anti-inflammatory drugs (NSAIDs).
What is the treatment for rebound headaches?
Stopping using over-the-counter painkillers will usually stop rebound headaches.
For prescription medications, seek medical advice.
It may help a doctor if you keep track of doses taken and headache symptoms to see if there is a pattern.
A doctor may recommend stopping or tapering-off the medication, or trying an alternative painkiller.
Some experts advise against taking painkillers for headaches for longer than 2 days in a row or more than twice a week.
Once rebound headaches have stopped, it is usually OK to use the painkillers again when needed, but only as directed.