Migraine injections replace daily oral medication with monthly or quarterly treatments that target migraine-specific pathways. The two main preventive injection classes are CGRP inhibitors and Botox for migraines. Acute rescue injections such as sumatriptan stop attacks in progress but do not prevent future episodes. More than half of patients quit daily oral preventives within three months. Migraine prevention injections eliminate the daily dosing burden.
National Headache Institute is a migraine practice and a headache specialist practice. National Headache Institute administers CGRP inhibitors, Botox for migraines, and acute rescue injections as injection-based chronic migraine treatment selected by migraine classification, frequency, and treatment history.
Why Daily Migraine Medications Fail Many Patients
More than half of patients prescribed daily oral migraine preventives discontinue treatment within three months due to side effects, limited effectiveness, or both.
Traditional daily preventives include beta-blockers, anticonvulsants, and antidepressants. None were designed specifically for migraine. Each was repurposed from another condition. Common reasons patients quit daily pills include weight gain, fatigue, cognitive fog, dizziness, and inconsistent migraine reduction.
Taking daily pain medication for more than 10-15 days per month can cause medication overuse headaches, worsening the original condition.
Migraine prevention injections eliminate daily dosing. CGRP inhibitors require one injection per month or one IV infusion per quarter. Botox for migraines requires one in-office session every 12 weeks. This transforms chronic migraine treatment from a daily obligation into a periodic clinical intervention.
How CGRP Inhibitors Prevent Migraines
CGRP inhibitors are the first medications designed specifically to prevent migraines by blocking the calcitonin gene-related peptide pathway that activates migraine pain signaling.
Calcitonin gene-related peptide (CGRP) is a neuropeptide released from sensory nerves during a migraine attack. CGRP dilates blood vessels and transmits pain signals through the trigeminal nerve system. CGRP inhibitors are monoclonal antibodies that bind to CGRP or its receptor and block the pain signaling cascade before a migraine starts.
Four FDA-approved CGRP monoclonal antibodies exist for migraine prevention:
- Erenumab (Aimovig): monthly self-injection that blocks the CGRP receptor
- Galcanezumab (Emgality): a monthly self-injection that binds to the CGRP molecule
- Fremanezumab (Ajovy): monthly or quarterly self-injection that binds to the CGRP molecule
- Eptinezumab (Vyepti): quarterly IV infusion administered in-clinic
CGRP inhibitors treat both episodic migraine (4 or more migraine days per month) and chronic migraine (15 or more headache days per month). A headache specialist administers and monitors all four CGRP inhibitors as part of individualized migraine relief therapy.
How Botox for Migraines Reduces Headache Days
Botox for migraines (onabotulinumtoxinA) reduces chronic migraine frequency by blocking neuropeptide release and acetylcholine signaling across 31 injection sites in the head and neck.
Botox for migraines interrupts pain transmission in the trigeminal pathway by blocking acetylcholine release at neuromuscular junctions and reducing CGRP release from sensory nerve endings.
A headache specialist administers 155 units of Botox across 31 injection sites in seven head and neck muscle groups every 12 weeks. Botox for migraines is FDA-approved for adults with chronic migraine: 15 or more headache days per month, with at least 8 exhibiting migraine features, for three or more consecutive months.
Botox for migraines typically reduces monthly headache days by 8-9 days in clinical studies. Patients with prominent neck tension alongside chronic migraine often respond well to Botox because the injection sites target the muscles involved in cervicogenic headache contribution.
National Headache Institute administers Botox for migraines following the FDA-approved PREEMPT injection protocol.
How a Headache Specialist Selects the Right Injection
A headache specialist selects the right migraine injection based on migraine classification, attack frequency, oral treatment history, and patient preference for self-injection or in-office administration.
Migraine classification
A headache specialist classifies each patient’s migraine as episodic or chronic. Episodic migraine (4-14 headache days per month) qualifies for CGRP inhibitors. Chronic migraine (15 or more headache days per month) qualifies for both CGRP inhibitors and Botox for migraines.
Oral treatment history
Insurance and clinical guidelines typically require documented failure of two or more oral preventives before approving injection-based chronic migraine treatment. The specialist documents treatment history and coordinates authorization for migraine prevention injections.
Administration preference
Patients who prefer self-injection at home receive CGRP monoclonal antibodies via a monthly autoinjector. Patients who prefer scheduled in-office visits receive Botox for migraines via a quarterly session. The specialist evaluates the patient’s lifestyle and preferences when selecting headache injection therapy.
Response monitoring
A headache specialist tracks migraine frequency, severity, and treatment response after starting injection therapy and adjusts the protocol if the initial injection type produces partial or insufficient relief.
Preventive Injections vs. Acute Rescue Injections
Migraine injections fall into two distinct categories: preventive injections that reduce future migraine frequency and acute rescue injections that stop an active attack.
Preventive migraine injections
CGRP inhibitors and Botox for migraines are preventive. Preventive injections reduce monthly migraine days and are administered on a set schedule regardless of whether a migraine is occurring.
Acute rescue injections
Sumatriptan and dihydroergotamine (DHE) are acute rescue injections. Rescue injections stop a migraine attack already in progress by constricting blood vessels and interrupting pain signaling. Rescue injections are used only when a migraine attack starts.
A headache specialist prescribes both categories. Many patients use a preventive injection (CGRP or Botox) alongside a rescue injection (sumatriptan) for breakthrough attacks.
When CGRP and Botox Are Combined for Partial Responders
Patients who achieve partial migraine relief from one injection type can benefit from adding the second. Combining CGRP inhibitors with Botox for migraines reduces headache days beyond what either treatment achieves alone.
Some chronic migraine patients respond partially to Botox but continue to experience significant headache days. Adding a CGRP inhibitor can reduce monthly headache days by an additional 5-6 days. Botox blocks neuropeptide release at nerve-muscle junctions while CGRP inhibitors block the CGRP pain signaling pathway directly.
National Headache Institute evaluates combination therapy candidacy for patients with partial response to single-agent migraine prevention injections.
Start Injection-Based Migraine Relief at National Headache Institute
National Headache Institute is a migraine practice that administers CGRP inhibitors, Botox for migraines, and acute rescue injections. A headache specialist at National Headache Institute evaluates migraine classification, treatment history, and administration preference to select the right headache injection therapy and monitor migraine prevention injections over time.
Schedule a migraine injection evaluation at National Headache Institute to begin chronic migraine treatment and migraine relief therapy without daily medication.atients with partial response to single-agent migraine prevention injections.
Frequently Asked Questions
What Are the Main Injection Options for Migraines?
The main migraine injection options are CGRP inhibitors (erenumab, galcanezumab, fremanezumab, eptinezumab) for prevention and Botox for chronic migraine prevention. Sumatriptan and dihydroergotamine are acute rescue injections that stop active migraine attacks.
How Often Do You Get Migraine Prevention Injections?
CGRP inhibitor injections are administered monthly or quarterly, depending on the specific medication. Botox for migraines is administered every 12 weeks. Both eliminate the need for daily oral medication.
What Is the Difference Between CGRP Inhibitors and Botox for Migraines?
CGRP inhibitors block the calcitonin gene-related peptide pain pathway and treat both episodic and chronic migraine. Botox blocks neuropeptide release at 31 head and neck injection sites and is approved only for chronic migraine with 15 or more headache days per month.
Can You Get Migraine Prevention Without Taking Daily Pills?
Migraine prevention injections, including CGRP inhibitors and Botox for migraines, replace daily oral medication with monthly or quarterly treatments. A headache specialist evaluates patients for injection-based chronic migraine treatment as an alternative to daily pills.
How Does a Headache Specialist Decide Which Migraine Injection to Use?
A headache specialist selects the migraine injection based on migraine classification (episodic or chronic), attack frequency, oral treatment history, and patient preference for self-injection at home or in-office sessions.