Headache & MIGRAINE during ivf

Going through IVF can change headache patterns significantly — even for women with no history of migraine. The hormonal manipulation, sleep disruption, and stress of a treatment cycle can each contribute, and the combination is often more than the sum of its parts. This page sets out what is typical, what is worth investigating, and how specialist input can help you and your fertility clinic make confident, evidence-based decisions at every stage of a cycle.

Migraine is unusually sensitive to changes in oestrogen — both rising and falling levels can trigger attacks in susceptible women. An IVF cycle puts the body through one of the most concentrated hormonal sequences in medicine: pituitary down-regulation, controlled ovarian stimulation, a deliberate trigger of ovulation, and luteal-phase support. Each of these stages exposes the brain to a different hormonal pattern, which is why headache often shifts or worsens during a cycle, even in women whose migraine is otherwise well controlled.

Sleep is also disrupted: early-morning injection schedules, frequent monitoring scans, and the cumulative anxiety of treatment all affect the regularity of sleep that migraine sufferers depend on.

Pituitary down-regulation (GnRH agonists such as buserelin or leuprolide). The aim of this phase is to suppress your own hormonal cycle. The associated drop in oestrogen often produces a temporary, menopausal-pattern headache — heavier in the first one to two weeks and usually settling.

Ovarian stimulation (gonadotropins such as Gonal-F, Menopur, or Bemfola). As oestrogen levels rise rapidly with multiple developing follicles, women with oestrogen-sensitive migraine often see an increase in attack frequency. Headache during this phase is common.

Trigger injection and egg collection. The hCG trigger and the procedural anaesthesia of egg retrieval can both contribute to a short-lived post-procedural headache. 

Embryo transfer and luteal phase. Progesterone support is generally well tolerated for headache. The most common challenge in this phase is the cumulative effect of disrupted sleep and treatment-related stress.

Two-week wait. Headache during the wait is common. Anxiety, sleep disturbance, and hormonal flux all play a role. Avoiding new medications that might affect early implantation is the usual approach. If pregnant, please read the patterns described on the headache in pregnancy .

Unsuccessful cycle. An unsuccessful cycle is hard in its own right. It is also often followed by a withdrawal-pattern migraine as oestrogen falls, and planning for this in advance — both clinically and emotionally — makes a real difference.

Most headache during IVF is not dangerous, but a small number of presentations need same-day assessment. Seek urgent medical attention (A&E, your fertility unit, or 111) for:

• A sudden, severe ("thunderclap") headache peaking within seconds
• A new severe headache that is unlike any you have had before
• Headache with visual disturbance, weakness, numbness, speech difficulty, confusion, or seizures
• Headache with abdominal swelling, severe nausea, breathlessness, or reduced urine output (possible ovarian hyperstimulation syndrome- OHSS)
• Severe headache after egg collection that does not respond to simple analgesia

The supraphysiological oestrogen levels of IVF stimulation slightly increase the risk of cerebral venous sinus thrombosis (CVST) — a rare but recognised complication. This risk is markedly higher when ovarian hyperstimulation syndrome (OHSS) is also present, due to the additional haemoconcentration and fluid shifts. CVST classically presents with a new, persistent, or severe headache. While uncommon, this is the reason any new or severe headache during a cycle should be assessed promptly rather than waited out.

The principles closely mirror those of pregnancy management, with the additional consideration of avoiding medications that might affect implantation.

Generally considered safe:

• Paracetamol at standard doses
• Magnesium and riboflavin (vitamin B2) as low-risk preventives
• Anti-sickness medication for migraine-associated nausea, with options that have established safety records

Use with careful, individualised discussion:

• NSAIDs (ibuprofen, naproxen) are best avoided around the time of embryo transfer because of theoretical effects on implantation
• Triptans are not contraindicated by fertility treatment itself; the decision is the same individualised one as in early pregnancy
• Greater occipital nerve blocks can be a useful option for refractory migraine during a cycle, avoiding systemic medication

Generally stopped or adjusted before a cycle:

• CGRP monoclonal antibodies (Aimovig, Ajovy, Emgality) — these have long half-lives and are usually stopped approximately 6 months before trying to conceive
• Botox for chronic migraine — typically held during active cycles and pregnancy
• Some oral preventives(notably topiramate, candesartan and valproate) — discontinued before conception attempts; alternative preventives can be discussed

If you are planning IVF, currently in a cycle, or recovering from one and would like specialist headache input, you can book a consultation  or email info@londonheadachespecialist.com.

Initial consultations are conducted in person at The Guthrie Wing, King's College Hospital, London. Virtual follow-ups are available.