A migraine is a type of headache characterized by severe throbbing pain on one side of the head accompanied by secondary symptoms such as nausea, vomiting, and sensitivity to light, sound, or smell. Other symptoms may include light-headedness and blurry vision. A migraine may be preceded by an aura, a neurological warning sign, which may occur 10 to 15 minutes before an attack. These include flashes of light, tingling sensations, or speech problems. Sometimes, you may have migraines without an aura. A migraine may last from a few hours to 3 days.
When Botox is administered for migraine headaches, doctors believe it works by blocking the neurotransmitter chemicals that carry pain signals to the brain. Botox functions as a roadblock in a pathway. It blocks the pain signals before they reach the nerve endings located around your neck and head.
