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.
Migraine is a neurological disorder that generally includes headaches. But it doesn't always. Some people have silent migraine -- a migraine without the symptom of headache pain. To understand silent migraine, it helps to know the four distinct phases of migraines. 1  Prodrome. 2  The prodrome phase warns that a migraine is coming.