Chronic migraines are what were formerly known as “transformed” migraines. These are near daily headaches, sometimes with migraine features but otherwise with frequent features of tension headaches. This may sound trivial but the treatment for tension headaches, typically with analgesics, would only make this syndrome worse. We learned that treating these with migraine preventive medications proved mostly effective. The current International Classification of Headache Disorders defines chronic migraine as a recurrent headache that has been ongoing for the past 3 months, occurs on at least 15 days per month, lasts at least 4 hours per day, and has 8 or more days per month when the headache has features of a migraine or responds to a typical migraine medication.
With the outbreak of World War II, weaponization of botulinum toxin was investigated at Fort Detrick in Maryland. Carl Lamanna and James Duff developed the concentration and crystallization techniques that Edward J. Schantz used to create the first clinical product. When the Army’s Chemical Corps was disbanded, Schantz moved to the Food Research Institute in Wisconsin, where he manufactured toxin for experimental use and generously provided it to the academic community.
On average, each BOTOX treatment requires 32 injections, though individual patients may require fewer or more. You’ll receive injections every twelve weeks, and each session only takes a few minutes. BOTOX begins to work as soon as it’s injected, and you should see full results within a week of your first injections. Most patients who benefit from BOTOX treatments receive five rounds of injections over 15 months. BOTOX is injected using a very fine needle. Most patients describe it as feeling like a tiny pinprick.
In double-blind, placebo-controlled chronic migraine efficacy trials (Study 1 and Study 2), the discontinuation rate was 12% in the BOTOX treated group and 10% in the placebo-treated group. Discontinuations due to an adverse event were 4% in the BOTOX group and 1% in the placebo group. The most frequent adverse events leading to discontinuation in the BOTOX group were neck pain, headache, worsening migraine, muscular weakness and eyelid ptosis.
“I see a lot of patients who come in from sun damage, or who have creases in their foreheads, more lines around the sides of their mouths, crow's feet, and wrinkles on the side of their nose,” Shah says. “At this age, a dermatologist can inject Botox in the right places to help train a person’s face to no longer fall into that habit, which can help decrease the odds that they’ll develop permanent wrinkles in those spots later on.”
In 1986, Oculinum Inc, Scott's micromanufacturer and distributor of botulinum toxin, was unable to obtain product liability insurance, and could no longer supply the drug. As supplies became exhausted, patients who had come to rely on periodic injections became desperate. For 4 months, as liability issues were resolved, American blepharospasm patients traveled to Canadian eye centers for their injections.
Some industry insiders say it's not unusual, if still legally murky, for drug-company representatives and doctors to share information with one another about the different ways an approved drug may be used. If a doctor notices that, say, a treatment for crossed eyes also "takes the lines out," he may mention it to the representative from whom he buys the drugs. That rep may share that with another of his clients, and so on.
William J. Binder reported in 2000 that patients who had cosmetic injections around the face reported relief from chronic headache. This was initially thought to be an indirect effect of reduced muscle tension, but it is now known that the toxin inhibits release of peripheral nociceptive neurotransmitters, suppressing the central pain processing systems responsible for migraine headache.
"The difference between using a cannula and a 'needle injection' technique is cannulas are a blunt tip needle that lets us place filler on a plane that allows it to last longer," explains Goodman. "They look better and preserve the 'untouched look' we're known for. Also, it's a more advanced technique that ensures the patient will not leave the office bruised."
There has not been a confirmed serious case of spread of toxin effect away from the injection site when BOTOX® has been used at the recommended dose to treat chronic migraine, severe underarm sweating, blepharospasm, strabismus, or when BOTOX® Cosmetic has been used at the recommended dose to treat frown lines, crow’s feet lines, and/or forehead lines.