A migraine requires only two of the following headache features: a unilateral distribution (one-sided), pulsatile quality (throbbing), moderate or severe pain (more than 5 out of 10), and aggravation by physical activity (such as bending over). In addition, to diagnose migraine, only one of the following is required: nausea or vomiting or sensitivity to light and noise.
Lastly, a Botox treatment does not offer permanent results. Botox is most effective when treatments are carried out at regular intervals before the results fully wear off. On average, the results last for three to four months,  although Botox metabolizes at different rates in different individuals. The first ever Botox treatment you receive may not last as long as subsequent treatments, plus you may require touch-ups two weeks after the procedure as your injector determines the right dosage for you. Over time, however, many patients notice that they can wait longer intervals between treatments as their treated facial muscles weaken.

The bacterium can also be found in the intestinal tracts of mammals and fish and in the gills and organs of crabs and other shellfish. Such naturally occurring instances of Clostridium botulinum bacteria and spores are generally harmless. Problems only arise when the spores transform into vegetative cells and the cell population increases. At a certain point, the bacteria begin producing botulinum toxin, the deadly neurotoxin responsible for botulism.
Absolutely. Botox (and competitors like Dysport and Xeomin, which will be widely available next January) are highly purified toxins that can temporarily erase or reduce horizontal forehead lines, vertical frown lines, and crow's-feet. "The injections slow muscles that contract hundreds of times a day, eventually etching lines in the skin," says New York City plastic surgeon Michael Kane, author of The Botox Book (St. Martin's Press). Botox can also lift the corners of the mouth that sag with age, smooth out the "pin cushion" look in some chins, soften smoker's lines around the mouth, and soften vertical neck cords.

Calcitonin gene-related peptide (CGRP) is a neuropeptide found all over the body, says Dr. Amaal Starling, an Assistant Professor of Neurology at the Mayo Clinic in Phoenix. This neuropeptide attaches to a receptor called a CGRP receptor. CGRP and its receptor are involved in numerous bodily processes—from gastrointestinal movement to the transmission of pain. Over the past few decades, there has been increasing evidence that CGRP plays a role in both migraine and cluster headache. During a migraine attack, researchers have found increased levels of CGRP in patients’ blood and saliva. They discovered migraine medications like sumatriptan reduced levels of CGRP in patients living with migraine. They also found that patients with chronic migraine—meaning 15 or more migraine days per month, eight of which either meet criteria for migraine or are treated with migraine-specific medication—had chronically elevated levels of CGRP. In addition, recent research found that giving a patient with migraine an infusion of CGRP would lead to a migraine-like attack. “All of these studies led to the hypothesis that CGRP and its receptor play a key role in migraine, as well as in cluster headache,” Dr. Starling says.
I tell my patients that it is not the total price that is important, but how many units are used. For instance, if a patient goes to a spa and pays $150 per area, that may sound like a great deal. However, when the patient ask how long the treatment is supposed to last, the spa responds "2 months". I have seen that many of those less expensive treatments often consist of around 10 units (and therefore carrying a "non-deal" $15 cost per unit!). So, what initially looks like a great bargain, is in fact just a treatment with an inadequate amount of Botox. Always ask your injector how many units they are using, so you can determine what price/unit you are getting. Experienced injectors know that there is no such thing as a standard amount of units, as everyone's facial anatomy and muscular strengths are variable, even from one side of the face to the other.
In clinical trials, 30.6% of patients (33/108) who were not using clean intermittent catheterization (CIC) prior to injection, required catheterization for urinary retention following treatment with BOTOX® 200 Units as compared to 6.7% of patients (7/104) treated with placebo. The median duration of postinjection catheterization for these patients treated with BOTOX® 200 Units (n = 33) was 289 days (minimum 1 day to maximum 530 days) as compared to a median duration of 358 days (minimum 2 days to maximum 379 days) for patients receiving placebo (n = 7).
It is not known whether BOTOX® is safe or effective to treat increased stiffness in upper limb muscles other than those in the elbow, wrist, fingers, and thumb, or in lower limb muscles other than those in the ankle and toes. BOTOX® has not been shown to help people perform task-specific functions with their upper limbs or increase movement in joints that are permanently fixed in position by stiff muscles. Treatment with BOTOX® is not meant to replace existing physical therapy or other rehabilitation that may have been prescribed.