Exercise-induced asthma is a condition of respiratory difficulty (bronchoconstriction) that is related to histamine release,is triggered by aerobic exercise, and lasts several minutes. Causes include medical conditions, environmental factors, and medications. The image below illustrates the pathogenesis of asthma.
A myelogram is an invasive diagnostic test that uses x-rays to examine the spinal canal. A special dye is injected into the spinal canal through a hollow needle. An x-ray fluoroscope then records the images formed by the dye. Myelograms can show conditions affecting the spinal cord and nerves within the spinal canal.
Thoracic Myelopathy. Myelopathy is a term that means that there is something wrong with the spinal cord itself. This is usually due to compression on the spinal cord but can also be due to intrinsic disease such as multiple sclerosis. Thoracic myelopathy is very different from the radiculopathy that is caused by isolated points of pressure on individual nerve roots.