William O. Roberts, MD, a family physician at MinnHealth, in Minnesota, and vice president at the American College of Sports Medicine, likens a stress fracture to bending a paperclip back and forth: Eventually you get little cracks. While stress fractures are pretty common in the lower extremities -- the shin, foot, ankle-- they can also occur in the back or in the arms, says Nicholas A. DiNubile, MD, an orthopaedic consultant to the Philadelphia '76ers and the Pennsylvania Ballet.
A headache or cephalalgia is pain anywhere in the region of the head or neck. It can be a symptom of a number of different conditions of the head and neck. Headaches can result from a wide range of causes both benign and more serious. Brain tissue itself is not sensitive to pain as it lacks pain receptors.
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