For a dog, bug bites can result in severe life threatening symptoms. Allergic reactions occur when the immune system produces antibodies that stimulate certain cells to produce chemicals. These chemicals cause the allergic reactions that are meant to protect the body from the intrusive bug bite.
Restrictive lung disease. Restrictive lung disease (chest wall diseases) can result from different problems, including interstitial fibrosis, scoliosis (spine curvature), and sarcoidosis. Some cause scarring in the lungs, while others compress the lungs. Some have no known cause; other causes include occupational exposure, chemotherapeutic agents or radiation, and connective tissue diseases such as lupus or rheumatoid arthritis.
Restrictive Lung Diseases. People with a restrictive lung disease have a much more difficult time filling their lungs with air. This is a result of the lungs being restricted from fully expanding. Most of the time, restrictive lung diseases occur when there is stiffness in the lungs themselves. Sometimes, this can occur when there is stiffness in the chest wall, weak muscles or damaged nerves that can restrict the expansion of the lungs. These are some of the conditions classified as restrictive lung disease: