Educational video describing the anatomy of the tensor fasciae latae muscle. Become a friend on facebook: http://www.facebook.com/drebraheim. Follow me on twitter: https://twitter.com/#!/DrEbraheim_UTMC. 1  Education. 2  Standard YouTube License.
The specific cause of body aches (myalgia) are the interleukins, which are primarily produced by the macrophages. These interleukins cause pain, body aches, hypersensitivity of the nerves, etc. Some of the interleukins (such as IL-2) cause the fever seen during the flu, and probably the headaches. Since these interleukins are produced in response many different kinds of bacterial and viral infections, symptoms such as fever, myalgia, and headaches can be seen in infections by many different etiologic agents.
Why some people get muscle cramps. Many people experience cramps when they sleep, which can be associated with excruciating pain. Athletes, on the other hand, tend to develop muscle cramps when they are exercising. A wide variety of factors can cause muscles to contract painfully. The following are common causes: A mineral deficiency involving potassium, calcium, magnesium and/or sodium.