Menstrually-Related Migraine and Menstrual Migraine: Diagnosis and Treatment in Ottawa

At the Ottawa Headache Centre, we take menstrually-related migraine seriously. The goal is not simply to label the pattern. The goal is to confirm the diagnosis carefully, identify whether attacks are happening only around the menstrual window or also at other times, and build a treatment plan that is practical, evidence-based, and individualized.

'Menstrually-related migraine' and 'menstrual migraine' both represent conditions whereby migraine attacks are closely linked to the menstrual cycle.

Although the two terms are often used interchangeably by many doctors, they actually represent two different migraine patterns that warrant distinction.

Compared to non-menstrual attacks, menstrually-related migraine attacks are often:

• More severe

• Longer lasting

• More disabling

• More resistant to treatment

• More likely to recur over several days

This is why many people with menstrually-related migraine require a more nuanced treatment approach.

The main trigger of menstrually-related migraine is a natural drop in estrogen that occurs just before menstruation.

This hormonal change can temporarily lower the migraine threshold in susceptible individuals.

This explains why some patients notice:

• Migraine worsening during the placebo week of birth control

• Attacks starting just before bleeding begins

• Predictable monthly attacks

• Improvement when hormone fluctuations are stabilized

The diagnosis of menstrually-related migraine requires:

1. Migraine diagnosis. The headache phenotype must meet ICHD-3 criteria for migraine

2. Consistent menstrual pattern. At least 2 of 3 cycles are associated with migraine attacks that occur on day -2 to +3 of menstruation.

Many people overestimate the menstrual association, while others have not recognized the relationship. A headache diary over 2–3 cycles often clarifies the true pattern.

At the Ottawa Headache Centre we also assess chronic migraine, medication overuse, perimenopause, hormonal contraception, sleep disruption, iron deficiency, and stress patterns because these frequently influence menstrually-related migraine.

At the Ottawa Headache Centre we use a structured approach to treating menstrually-related migraine. Typically, treatment depends on:

• Attack predictability

• Frequency of attacks outside the menstrual window

• Severity and disability

• Response to prior treatments

Many people benefit from a combination of acute treatment + cycle-based prevention or "mini-prophylaxis".

However, because frovatriptan has a long half-life compared to other triptans, the longer duration of action may help reduce the risk of migraine attacks during the high-risk menstrual window. In menstrually-related migraine and menstrual migraine it is predictable that the migraine attack will happen and last for longer.

How to use frovatriptan for menstrually-related migraine

Frovatriptan is typically started 2 days before the expected start of menstruation and continued for 5–6 days. A commonly used regimen is 2.5 mg twice daily during this period.

This strategy is most helpful when:

• Migraine attacks reliably occur around menstruation

• Cycles are predictable

• Standard acute treatment alone is insufficient

This approach should always be discussed with a doctor to ensure it is appropriate for your individual migraine pattern and medical history.

Continuous migraine prevention for those with menstrually-related migraine and menstrual migraine

Some people with menstrually-related migraine experience frequent and disabling attacks in spite of first-line treatment. The same effective preventive treatments that are used in chronic migraine are effective for menstrually-related migraine and menstrual migraine when headache burden is substantial.

Continuous migraine preventives may be especially helpful when:

• Migraine occurs throughout the month

• Chronic migraine is present

• Disability is high

• Mini-prevention is insufficient

• There is concurrent acute medication-overuse

Preventive options for menstrually-related migraine and menstrual migraine include:

• Oral migraine preventives

• CGRP-targeted therapies

• Botox® for chronic migraine

• Lifestyle optimization

• Hormonal strategies

Treatment focuses on the overall migraine disease, not just the menstrual window.

Next steps

What to do if you think you have menstrually-related migraine

If you suspect your migraine may be linked to your menstrual cycle, the most helpful first steps are:

• Track your headaches. Use a headache diary for at least 2–3 cycles to identify patterns between migraine attacks and menstruation.

• Treat attacks early. Menstrually-related migraine often responds best when treatment is taken early and consistently.

• Discuss cycle patterns with your doctor. Targeted strategies such as short-term prevention or hormonal adjustments may significantly reduce attacks.

• Consider referral to a headache specialist. If migraine attacks are frequent, severe, or difficult to control, specialized headache care can help optimize treatment.

At the Ottawa Headache Centre, we specialize in identifying migraine patterns and developing practical, individualized treatment plans. If you find it difficult to control your migraine attacks, consider asking your doctor about a referral to the Ottawa Headache Centre.

Disclaimer

This material is provided for educational purposes and does not replace independent clinical judgment or institutional protocols. Management decisions remain the responsibility of the treating clinician.