Spider monkeys are found in many aspects of the Mesoamerican cultures. In the Aztec 260-day calendar, Spider Monkey (Nahua Ozomatli) serves as the name for the 11th day. In the corresponding Maya calendar, Howler Monkey (Batz) is substituted for Spider Monkey.
A migraine is a throbbing painful headache, usually on one side of the head, that is often initiated or triggered by specific compounds or situations (environment, stress, hormones, and many others). They occur more often in women (75%, approximately) and may affect a person's ability to do common tasks.
Most migraineurs admit they can sense a migraine forming before it actually reaches the headache stage. Even before you feel the headache pain, your body is aware of an impending headache and because your neck muscles have been conditioned to react, they begin to tighten and become inflamed with pain.