BOTOX, highly diluted botulinium toxin, works to prevent migraine by blocking the release of a chemical in muscle cells that transmits the signal to contract to muscle fibers. Research into using BOTOX to treat migraines began after patients receiving it for other conditions reported improvement in their migraine symptoms. In 2010, after years of research and collecting clinical data, the FDA approved BOTOX for treating chronic migraines.

Allergan PLC (AGN) is a large market cap ($65B) biopharmaceutical company with a pipeline of innovative and generic therapeutics for diseases affecting the eyes, bowel, lungs, skin, urogenital systems and brain. Through the acquisition of Tobira Pharmaceuticals and its assets including cenicriviroc (CVC), Allergan is one of the leaders in the clinical development of anti-NASH therapeutics (the focus of this article).
Launched in 2002, Practical Neurology is a publication uniquely dedicated to presenting current approaches to patient management, synthesis of emerging research and data, and analysis of industry news with a goal to facilitate practical application and improved clinical practice for all neurologists. Our straightforward articles give neurologists tools they can immediately put into practice.
Botox often gets a bad rep for leaving patients looking a little frozen, but that's the fault of bad technique, not necessarily the procedure itself, explains Day. "In many places where it's not a trained aesthetic physician doing the injection, it's really just inject by number," she says. The problem with this is that no two faces, or even two sides of a face, are the same. "That cookie cutter, one-size-fits-all approach is what often gives these treatments a bad name," says Day.
The most commonly reported side effects for JUVÉDERM® injectable gels were injection-site redness, swelling, pain, tenderness, firmness, lumps/bumps, bruising, discoloration, and itching. For JUVÉDERM VOLBELLA® XC, dryness was also reported. For JUVÉDERM VOLUMA® XC, side effects were predominantly moderate in severity, with duration of 2 to 4 weeks; for JUVÉDERM® Ultra XC , JUVÉDERM® Ultra Plus XC, or JUVÉDERM VOLLURE™ XC, they were mostly mild or moderate in severity, with duration of 14 days or less; and for JUVÉDERM VOLBELLA® XC, they were predominantly mild or moderate, with duration of 30 days or less.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. An antitoxin is available but must be used before symptoms of overdose become apparent. Symptoms of overdose may be delayed, and may include serious muscle weakness, breathing problems and paralysis.

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Ophthalmologists specializing in eye muscle disorders (strabismus) had developed the method of EMG-guided injection (using the electromyogram, the electrical signal from an activated muscle, to guide injection) of local anesthetics as a diagnostic technique for evaluating an individual muscle’s contribution to an eye movement.[44] Because strabismus surgery frequently needed repeating, a search was undertaken for non-surgical, injection treatments using various anesthetics, alcohols, enzymes, enzyme blockers, and snake neurotoxins. Finally, inspired by Daniel Drachman’s work with chicks at Johns Hopkins,[45] Alan B Scott and colleagues injected botulinum toxin into monkey extraocular muscles.[46] The result was remarkable: a few picograms induced paralysis that was confined to the target muscle, long in duration, and without side-effects.
Do not inject into blood vessels. Introduction of these products into the vasculature may lead to embolization, occlusion of the vessels, ischemia, or infarction. Take extra care when injecting soft-tissue fillers; for example, inject the product slowly and apply the least amount of pressure necessary. Rare, but serious, adverse events associated with the intravascular injection of soft-tissue fillers in the face have been reported and include temporary or permanent vision impairment, blindness, cerebral ischemia or cerebral hemorrhage leading to stroke, skin necrosis, and damage to underlying facial structures. Immediately stop the injection if a patient exhibits any of the following symptoms: changes in vision, signs of a stroke, blanching of the skin, unusual pain during or shortly after the procedure. Patients should receive prompt medical attention and, possibly, evaluation by an appropriate healthcare professional specialist should an intravascular injection occur
The incidence of UTI increased in patients who experienced a maximum post-void residual (PVR) urine volume ≥200 mL following BOTOX injection compared to those with a maximum PVR <200 mL following BOTOX injection, 44% versus 23%, respectively. No change was observed in the overall safety profile with repeat dosing during an open-label, uncontrolled extension trial.
In many children, there are a few muscle groups that can have very active spasticity. A more focal approach to these muscles would be better than a widespread approach. In this case a doctor may advise a nerve block to interrupt the signal to the muscle that is spastic. Once the signal that is carried to the muscle by the nerve is interrupted, the spasticity will decrease.
Though there's still more research to be done on Botox for migraines and doctors aren't yet completely sure why the procedure is effective, they have some ideas. Ravitz tells me, "What [Botox] does is paralyze nerve terminals. Essentially, nerve terminals transmit pain, but they also produce pain substances while they’re doing that, and it completely paralyzes that process." She says that it stops the process of pain patterning and it also relaxes the muscles.

University-based ophthalmologists in the USA and Canada further refined the use of botulinum toxin as a therapeutic agent. By 1985, a scientific protocol of injection sites and dosage had been empirically determined for treatment of blepharospasm and strabismus.[76] Side effects in treatment of this condition were deemed to be rare, mild and treatable.[77] The beneficial effects of the injection lasted only 4–6 months. Thus, blepharospasm patients required re-injection two or three times a year.
Botox injections for migraines have been proven to reduce the intensity and duration of migraines for those who suffer. Botox was developed in the 1970s by an ophthalmologist who was looking to develop a treatment for strabismus (crossed eyes). This simple migraine treatment was discovered accidentally when people undergoing plastic surgery also experienced migraine relief. While they don’t work for everyone, Botox injections for migraines offer another way to approach treatment of migraine headaches.
Results can vary depending on who is performing the injection on the patient. It is very important to go to a physician who is experienced at this procedure, does it him- or herself (rather than having a nurse, physician's assistant [PA], or other nonphysician do it), and has a good reputation for performing this type of procedure. The manufacturers of Botox recommend physicians inject the medication themselves. As with most procedures, the skill of the practitioner is related to how often he or she performs the procedure.
Some service providers offer financing options to make the procedure affordable. The Botox Cosmetic product is eligible for the Brilliant Distinctions Program that helps the members through savings, rebates, bonus points, and other perks. But there are also some providers with their own rebate program that gives a discount on the next procedure by 10% to 25%. Coupons are available in forms of discount, promo or free service for loyal customers. Also, a large volume of Botox used in the treatment, there is a possibility to avail discounted price of the Botox per unit.

Remember that the skill of the injector is extremely important when considering Botox injections. Because Botox can have some very obvious and embarrassing side effects like drooping eyelids, blurry vision, and excessive bruising around the injection site, it's important to consult with an experienced injector. Unlike dermal fillers which can be melted away with a follow-up injection of hyaluronidase, there's not much you can do about a bad Botox experience other than wait it out.
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BOTOX blocks neuromuscular transmission by binding to acceptor sites on motor or sympathetic nerve terminals, entering the nerve terminals, and inhibiting the release of acetylcholine. This inhibition occurs as the neurotoxin cleaves SNAP -25, a protein integral to the successful docking and release of acetylcholine from vesicles situated within nerve endings. When injected intramuscularly at therapeutic doses, BOTOX produces partial chemical denervation of the muscle resulting in a localized reduction in muscle act ivity. In addition, the muscle may atrophy, axonal sprouting may occur, and extrajunctional acetylcholine receptors may develop. There is evidence that reinnervation of the muscle may occur, thus slowly reversing muscle denervation produced by BOTOX.

Temporary bruising is the most common side effect of Botox. Headaches, which resolve in 24-48 hours, can occur, but this is rare. A small percentage of patients may develop eyelid drooping. This usually resolves in three weeks. This usually happens when the Botox moves around so you shouldn't rub the treated area for 12 hours after injection or lay down for three to four hours.
"As we get older, we lose volume in our face and hyaluronic acid filler can be used as a replacement,” explains Wexler. "For younger women, injections can be used to treat areas with acne scarring or hollowness under the eyes." During your ‘20s, when the face is at its fullest and healthiest, it has been argued that a shadowy gaze can even be quite charming. But in other cases, hereditary dark circles can result in a persistently tired look, which is where a few drops of filler under the eyes may be useful. As top dermatologist David Colbert, M.D. is quick to note, however, too much Botox and filler distorts the face and as a result will make you appear older. “When the line is crossed everyone starts looking like they are related," he also cautions of a uniform cookie-cutter appearance that lacks character or individuality. Or worse. “It’s a snowball effect of people liking something, coming back too soon [for even more], and then it gets too heavy,” adds Wexler.
In clinical trials, 6.5% of patients (36/552) initiated clean intermittent catheterization for urinary retention following treatment with BOTOX® 100 Units as compared to 0.4% of patients (2/542) treated with placebo. The median duration of catheterization for patients treated with BOTOX® 100 Units was 63 days (minimum 1 day to maximum 214 days) as compared to a median duration 11 days (minimum 3 days to maximum 18 days) for patients receiving placebo.
Tell your doctor about all your medical conditions, including: plans to have surgery; had surgery on your face; have trouble raising your eyebrows; drooping eyelids; any other abnormal facial change; are pregnant or plan to become pregnant (it is not known if BOTOX® Cosmetic can harm your unborn baby); are breast-feeding or plan to (it is not known if BOTOX® Cosmetic passes into breast milk).
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