
Medication Overuse and Migraine
Hi!
I hope this post is okay, as I'm not posting any particular recent study, but I was reading up on medication overuse and thought these studies were interesting/the results surprised me, so I'm sharing in case they might interest someone else.
To note: these articles are from the same researchers about the same patients.
I spoke with my neurologist about whether detoxing again from medication overuse was necessary before starting the next preventative treatment we'd planned for me.
On the one hand, it is standard practice here to do it at least once, and can be required by insurance before certain treatments, like botox or CGRP-meds are given, as sometimes preventative treatments are no longer necessary after detox because attack rates drop <2 days a month. On the other hand, my neurologist said that a good preventative will naturally reduce medication overuse.
So I got curious which it was and started reading a bit, and found that both statements are correct, actually.
Several studies [PMID: 15154858, 32453406] show that about 70% of people with medication overuse convert from chronic to episodic migraine after a withdrawal period, which, personally, I thought was a (positively) surprising number.
Then again, in about 75%, medication overuse ceased after starting a preventative, without being instructed for a withdrawal. [PMID: 32453406 ]
If you can see this graph ( I think it ended up at the top of the post), the drop in headache days between a group with withdrawal without a preventative (the blue line) or the group with withdrawal with preventative (purple line) at 4 months is about the same!
The orange line belongs to a group that was only started on a preventative without mentioning medication overuse at all until the sixth month, when they were told about medication overuse (if still applicable) and possible withdrawal, given the option to do so, but it wasn't necessary.
To note: there are several people in the withdrawal without preventative group that refuses to start a preventative after withdrawal, so that might play a role in that group having an increase in headaches again. [PMID: 34325483 ]
The withdrawal in these studies is defined as zero acute pain medication use except for anti-histamines. On r/migraine, I have also seen some people being instructed to restrict their intake by cutting down to 8-10 days a month instead of withdrawing completely. About that, I found this study [PMID: 29050498 ].
While both options are effective, complete withdrawal seemed more effective, with a drop in headache days by 7.2 days/ 46% in the withdrawal group and 3.6 days / 22% in the restricted intake group. Disability reduction and decrease in headache burden was greater in the withdrawal group [PMID: 30732459]
The advice/conclusion so far from the main study is that withdrawal should be 3 months without any NSAIDs/opioids/combination analgesics and 2 months without triptan, while simultaneously starting a preventative.
These are the studies:
https://pubmed.ncbi.nlm.nih.gov/15154858/
https://pubmed.ncbi.nlm.nih.gov/32453406/
https://pubmed.ncbi.nlm.nih.gov/34325483/