Can CGRP or Botox injections help treat my chronic migraine?

Question

Hello doctor,

I suffer from chronic, debilitating migraines occurring 18 to 20 days per month that completely disable me for eight to 16 hours each time, forcing me to miss work two to three times per week and significantly impacting my career, income, and relationships. The pain is excruciating, severe, and throbbing, usually concentrated on the left side of my head, accompanied by intense nausea with frequent vomiting, extreme sensitivity to light, sound, and smells, and sometimes visual disturbances with flashing lights, blind spots, or zigzag lines before the headache starts. I have to retreat to a completely dark, quiet room and lie completely still until the migraine passes, unable to work, care for my children, or function in any capacity.

I have tried multiple oral preventive medications, including Propranolol, Topiramate, Amitriptyline, and several others, with minimal effectiveness or intolerable side effects. Oral acute medications like Triptans (Sumatriptan, Rizatriptan) sometimes help if I catch the migraine extremely early, but often they do not work well enough, I vomit them up before they can be absorbed, or the migraine returns hours later. I have heard about newer injectable preventive medication, including calcitonin gene-related peptide (CGRP) monoclonal antibodies (Erenumab, Fremanezumab, Galcanezumab) and Botulinum toxin (Botox) injections for chronic migraine.

What are these migraine injections?
How do they work differently from oral medications?
How effective are they for chronic migraine sufferers?
What are the potential side effects, and could they finally provide better relief than the pills I have been taking?

Kindly help.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

You are describing chronic migraine, where headaches occur on 15 or more days per month with features of migraine on at least eight days. When oral preventives fail or cause side effects, injectable therapies like calcitonin gene-related peptide (CGRP) monoclonal antibodies and Botulinum toxin (Botox) injections are indeed very effective options.

Calcitonin gene-related peptide (CGRP) monoclonal antibodies, such as Erenumab, Fremanezumab, and Galcanezumab, are monthly or quarterly injections that block a brain chemical called calcitonin gene-related peptide (CGRP), which is involved in migraine pain and inflammation. They specifically target the migraine pathway, unlike oral drugs that act broadly on the nervous system. Most patients experience a 50 to 70 percent reduction in migraine frequency and intensity within one to three months. Side effects are usually mild, such as constipation, injection site pain, or fatigue. Serious reactions are rare. These are given as small self-injections at home once a month.

Botulinum toxin (Botox) is approved for chronic migraine occurring on 15 or more days per month. It works by relaxing overactive pain fibers around the head and neck. It is given every 12 weeks by a neurologist, involving around 31 small injections over the scalp, forehead, temples, and neck. Many patients experience a 50 percent or more reduction in headache days after two to three cycles. Side effects are mild and temporary, such as neck soreness, transient drooping of the eyelid, or stiffness.

Both options are preventive. Calcitonin gene-related peptide (CGRP) antibodies act systemically by blocking the migraine chemical, while Botulinum toxin (Botox) acts locally on nerves in the head and neck. In some resistant cases, both are used together.

Since you have tried multiple oral drugs, you are a good candidate for either calcitonin gene-related peptide (CGRP) antibody therapy or Botulinum toxin (Botox). Both can be life-changing, reducing attack frequency and medication use, and improving daily function.

These injectable options are safe, effective, and designed for people like you with disabling chronic migraines who have not responded to tablets. Discuss with your neurologist which option suits your lifestyle, insurance, and response pattern. Many patients finally regain control and a normal life with these modern treatments.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.