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Headache medications

In a recent study published in Pain by the University of Pittsburg researchers, the effectiveness of medical cannabis was compared with traditional prescription medications for managing chronic pain.

The study involved 440 patients using medical marijuana and 8,114 patients treated with prescription medications (nonopioid or opioid) in the same healthcare system. Both groups received comprehensive pain assessments and treatment plans.

Key Findings

Response Rates: At three months, 38.6% of the medical marijuana group and 34.9% of the prescription medication group showed significant improvements in pain, function, or overall well-being. The response rate in the medical marijuana group remained stable at six months.

Opioid Reduction: Among the 157 patients in the medical marijuana group who were also prescribed opioids, there was a significant reduction in opioid use, with a mean decrease of 39.3% in morphine milligram equivalents over six months.

Comparative Effectiveness: The study found that medical marijuana was more effective than prescription medications for treating chronic pain, with patients being more likely to respond positively to medical marijuana.

This study suggests that medical marijuana may be at least as effective as, if not more effective than, conventional medications for chronic pain. It also highlights the potential of medical marijuana in reducing opioid use, which is a significant public health concern.

I prescribe medical marijuana to our migraine patients when prescription drugs and non-drug therapies are ineffective. For many, marijuana helps relieve nausea; for some, it helps with migraine-related anxiety and insomnia; and for a smaller proportion, it helps with pain. My observations are probably skewed by the fact that I prescribe medical cannabis only for people with more severe migraines. It may be more effective for people with mild migraines or migraines of average severity.

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It was an honor to participate in the 35th Annual Winter Symposium of the Headache Cooperative of the Northeast, held on March 7 and 8. Leading headache experts from across the country covered many interesting topics. I had the privilege of discussing a presentation by Dr. Chiang Chia-Chun of the Mayo Clinic on artificial intelligence in Headache Medicine.

Here is my PowerPoint presentation: Artifical Intelligence discussion (1)

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FDA has approved suzetrigine (Journavx) for the treatment of moderate to severe acute pain. The drug was found to be as effective as Vicodin (hydrocodone with acetaminophen) after surgery to remove a bunion and after a “tummy tuck”.

Suzetrigine is a selective NaV1.8 inhibitor, targeting a key sodium channel involved in pain signaling. The NaV1.8 channel is crucial in transmitting nerve pain signals to the brain. However, the drug does not enter the brain and works only on the nerves outside the brain and in the body.

Unlike traditional pain medications such as opioids, suzetrigine provides effective pain relief without addiction risk or severe systemic side effects. Early clinical trials suggest it may be beneficial for conditions like neuropathic pain, post-surgical pain, and chronic pain syndromes. Hopefully, it will also prove effective in the treatment of migraines and other types of headaches.

In clinical trials, about 37% of patients experienced adverse events, though most were mild. These included itching, rash, constipation, and muscle spasms.

As a non-opioid option, suzetrigine provides clinicians with an additional tool for acute pain management. The medication is expected to become available in the second quarter of 2025. The expected cost is about $15 a pill.

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It’s an honor to have contributed, alongside Andrew Blumenfeld and Sait Ashina, a chapter on Botox injections to the upcoming textbook Headache and Facial Pain Medicine. Edited by Sait Ashina of Harvard Medical School and published by McGraw Hill, the book is set for release in 2025 but is already available on Amazon.

The book includes chapters on Primary Headaches, Secondary Headaches, Facial Pain and Cranial Neuralgias, Special Treatments and Procedures, Special Populations, and Special Topics. It is an excellent textbook for health care providers.

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“Dr. Mauskop,
Congratulations on hitting a new milestone – over 3800 citations of your articles! This places you in the top 5% for citations within the Doximity community.”
Some of the most cited articles:
– Intravenous Magnesium Sulphate Relieves Migraine Attacks in Patients with Low Serum Ionized Magnesium Levels: A Pilot Study
– Botulinum toxin type A for the prophylaxis of chronic daily headache: Subgroup analysis of patients not receiving other prophylactic medications: A randomized double-blind, placebo-controlled study
– Clinical Guidelines for the Use of Chronic Opioid Therapy in Chronic Noncancer Pain
– Effect of noninvasive vagus nerve stimulation on acute migraine: an open-label pilot study
– Foods and supplements in the management of migraine headaches.
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Hemicrania continua, a rare but severe headache condition, literally means “continuous one-sided headache” in Latin. This chronic condition manifests as an intense, unrelenting pain concentrated on one side of the head, typically around the eye area. It is more common in women.

The condition often presents with distinctive features beyond the constant one-sided pain. Patients frequently experience:

  • Redness and tearing of the affected eye

  • Nasal congestion and runny nose

  • Forehead and facial sweating

  • Eyelid swelling

  • Pupil size changes

  • Restlessness or agitation

The diagnosis of hemicrania continua can be particularly challenging, especially when the only symptom is a one-sided headache. Doctors often misdiagnose it as migraine or tension headache because of its rarity and overlap with other headache types.

What makes hemicrania continua unique is its remarkable response to indomethacin, a powerful non-steroidal anti-inflammatory drug (NSAID). The response to this medication is so dramatic that hemicrania continua is one of two headache types that are called indomethacin-sensitive headaches.

While indomethacin is highly effective, some patients may experience stomach-related side effects. For those who cannot tolerate indomethacin, several alternatives exist:

  • Other NSAIDs (though generally less effective)

  • Boswellia, an herbal supplement with anti-inflammatory properties

  • Botox injections

Chronic paroxysmal hemicrania shares features with hemicrania continua but differs in its pattern. It causes more intense pain attacks lasting minutes but occurring many times throughout the day. Like hemicrania continua, it also responds extremely well to indomethacin.

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Dr. Messoud Ashina of the Danish Headache Center led a group of European researchers in analyzing the efficacy of migraine medications for treating acute migraine attacks. Their paper published in the British Medical Journal, “Comparative effects of drug interventions for the acute management of migraine episodes in adults: systematic review and network meta-analysis”, looked at 137 randomised controlled trials comprising 89,445 participants allocated to one of 17 active interventions or placebo.

They concluded that “Overall, eletriptan, rizatriptan, sumatriptan, and zolmitriptan had the best profiles, and they were more efficacious than the recently marketed drugs lasmiditan, rimegepant, and ubrogepant.”

When I decided to specialize in treating headaches in 1987, the options for the treatment of acute migraine attacks were very limited. We had NSAIDs, like aspirin and ibuprofen, opioids (narcotics), and ergotamines. Now, we have a cornucopia of options – seven triptans (the first in this group, sumatriptan, was introduced in 1992), three gepants, and one ditan.

Triptans work on serotonin receptors, gepants affect CGRP, and ditan, lasmiditan (Reyvow) works on a different serotonin receptor than triptans.

Over more than 30 years, triptans have proven to be exceptionally safe and effective. In many countries, they are sold without a prescription. Since patents for these drugs have mostly expired, they have become inexpensive.

Gepants were introduced almost five years ago. Ubrogepant(Ubrelvy) and rimegepant (Nurtec) came out first, and more recently, a nasal spray of zavegepant (Zavzpret) was added to this group. They also appear effective and safe, although they have not withstood the test of time like the triptans. And, because they are still protected by patents, they are costly. I don’t think that the prices are too high – if companies cannot recoup literally billions of dollars it takes to get FDA approval, no new drugs will emerge.

It is good to have all these options available because triptans do not work for about 30-40% of patients. For these people, gepants can be life-saving.

In the US, many insurers insist that a patient tries one or two triptans first before they will agree to pay for the more expensive gepants.

In the analysis, eletriptan came out first. However, even though a generic version was introduced in 2017, the cost has not come down as much as for sumatriptan or rizatriptan. Generic sumatriptan can be bought for $.60 a pill, while eletriptan costs $2 a pill. Another important point is that, despite low cost, insurance companies will cover 6 to 12 tablets a month. Some patients don’t realize that if they need more than this amount each month, they could buy extra by paying out-of-pocket, provided their doctor gives them a prescription for a higher amount.

In the US, eletriptan is available in 20 mg and 40 mg strengths. In some European countries, they come in 80 mg strength. The point is that taking two 40 mg tablets at once is not dangerous.

Some patients report that generics do not work as well as branded drugs. Others find that generics made by different manufacturers differ in their efficacy. The manufacturer’s name is always listed on the pill bottle dispensed by the pharmacy. The reason for this discrepancy is not necessarily due to different amounts of the active drug but rather due to inactive ingredients that hold the pill together. Some may not dissolve as fast or as completely as others. This is another reason why taking a higher-than-recommended dose may be necessary.

Triptans are safer than most over-the-counter drugs, such as ibuprofen (Advil), naproxen (Aleve), or Excedrin. They are safer for your stomach, kidneys, and heart.

 

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Two sets of “designer drugs” have been developed based on our understanding of the neurobiology of migraines. The first, sumatriptan (Imitrex), introduced in 1992, was the pioneer in a class of seven triptan drugs, all targeting serotonin mechanisms. Erenumab (Aimovig), which targets the CGRP (calcitonin gene-related peptide) mechanism, was approved by the FDA in 2018. This class now includes four injectable, three oral, and one nasal drug. Additionally, many older drugs, although not specifically developed for migraine treatment, have proven effective for some patients. Despite these numerous options, a significant minority of patients do not respond to any of these treatments.

This is why the development of drugs targeting different parts of the migraine cascade is so promising. Danish neurologists, led by Dr. Mesoud Ashina, have published results from a phase 2 double-blind study of a new drug that blocks PACAP (pituitary adenylate cyclase-activating peptide).

In this study, patients were divided into two groups, receiving an infusion of a placebo or two different doses of the active drug, currently known as Lu AG09222, developed by the Danish company Lundbeck. In the final analysis, the reduction in migraine days was compared between 94 patients who received a placebo and 97 patients who received the higher dose of the active drug. The higher dose significantly reduced the number of migraine days in the month following the infusion (6.2 vs. 4.2 days reduction). The side effects reported were mild and infrequent.

Phase 2 studies are relatively small and short in duration. The FDA typically requires two large parallel studies involving a total of 1,000 or more patients before considering approval. Therefore, even if Lu AG09222 is found to be safe and effective, it may not receive approval for another 2-3 years.

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The FDA approved transcranial magnetic stimulation (TMS) to treat anxiety, depression, and OCD about 15 years ago. Most insurers cover this treatment. However, it remains highly underutilized.

A study just published by Dutch researchers in Psychiatry Online compared TMS with a third antidepressant in people who did not respond well to two different antidepressants.

Both treatments were combined with psychotherapy.

  • 89 people with depression who hadn’t improved with at least two previous treatments took part.

  • They were randomly assigned to either TMS or a new antidepressant.

  • The treatment lasted eight weeks.

  • TMS involved 25 sessions of magnetic stimulation.

  • The medication group switched to a new antidepressant following standard guidelines.

The primary outcome measure was the degree of improvement in depression symptoms.

TMS was more effective than switching medications. More people responded well to MS (38% vs 15%) and more people’s depression went into remission with TMS (27% vs 5%).

TMS was better at improving symptoms of anxiety and lack of enjoyment (anhedonia)

Both treatments were equally effective for improving sleep, overthinking, and negative thought patterns. People’s expectations about their treatment were linked to how much their depression improved.

In conclusion, for people with depression that hasn’t responded well to a couple of medication attempts, TMS might be a more effective option than trying another antidepressant. The study also suggests that the choice between TMS and medication might depend on which specific symptoms a person struggles with most.

We started using TMS for people with migraine headaches if they do not respond to multiple standard therapies. About half of these patients respond well. However, we do not have large controlled trials to confirm that TMS effectively treats migraines.

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Candesartan ((Atacand) is a blood pressure medication in the class of angiotensin receptor blockers (ARBs). A recently published study involving 86 patients confirmed that candesartan can improve migraines. This was not a double-blind but rather an observational study, meaning that the results were not as reliable. However, the study is worth publicizing since candesartan is often overlooked as an effective migraine drug.

Here is more about candesartan from my previous post:

Candesartan was first shown to work for the prevention of migraine headaches in a 60-patient Norwegian trial published in JAMA in 2003. This was a double-blind crossover trial, which means that half of the patients were first placed on a placebo and then switched to candesartan and the second group started on candesartan and then were switched to placebo. This trial showed that when compared to placebo, 16 mg of candesartan resulted in a very significant reduction in mean number of days with headache, hours with headache, days with migraine, hours with migraine, headache severity index, level of disability, and days of sick leave. Candesartan was very well tolerated – there was no difference in side effects in patients taking the drug and those taking the placebo.

In another trial, the researchers compared candesartan to placebo as well as to propranolol, which is an FDA-approved blood pressure drug for the prevention of migraines. This trial in 72 migraine sufferers compared 16 mg of candesartan with placebo and 160 mg of propranolol. Candesartan and propranolol were equally effective in reducing migraine days per month and both were significantly more effective than placebo.

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A new study just published in Neurology showed that people taking proton pump inhibitors (PPIs) such as omeprazole (Prilosec) and esomeprazole (Nexium) have a 70% higher risk of having migraines or severe headaches. The risk was 40% higher with the use of H2 blockers such as famotidine (Pepcid) and 30% higher in those taking generic antacids.

The study analyzed data from 11,818 participants out of 31,127 in the National Health and Nutrition Examination Survey who were taking acid-suppressing drugs. Interestingly, those on H2 blockers had a higher migraine risk if they also had a higher intake of magnesium, though this finding was based on only 75 H2 blocker users, making it potentially unreliable.

The likely cause of the association between acid-suppressing drugs and headaches is the previously documented decrease in absorption of magnesium, vitamin B12, and other nutrients. PPIs have been also found to increase the risk of dementia.

These acid-suppressing drugs are available without a prescription and people assume that they are safe. They are indeed safe when used for short periods of time. Once a person starts taking PPIs, they are very difficult to stop because stopping them often leads to a rebound of acid production. This sometimes makes heartburn worse than before a PPI was started. One way to try to stop them is to switch to an H2 blocker and then, to an antacid such as Gaviscon or Rolaids.

For those who require long-term PPI use, supplementing with magnesium, sublingual vitamin B12, and a multivitamin may help mitigate potential nutrient deficiencies. Vitamin B12 is often poorly absorbed and getting a monthly injection is more reliable. Some of our migraine patients, even some who are not on acid-suppressing drugs, also require monthly infusions of magnesium.

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I will be speaking on nutritional supplements for migraines and an update on triptans on April 20, 2024.

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