Addiction is defined as a chronic, relapsing brain disease that is characterized by compulsive drug seeking and use, despite harmful consequences.â  It is considered a brain disease because drugs change the brainâthey change its structure and how it works.. Volkow and H. Schelbert. Addiction is a lot like other diseases, such as heart disease. Both disrupt the normal, healthy functioning of the underlying organ, have serious harmful consequences, and are preventable and treatable, but if left untreated, can last a lifetime.
What are the possible causes of pulmonary consolidation? Answer: Pulmonary consolidation is a term used in olden days for lobar pneumonia. Normally the lungs are filled with air, and they are spongy but in condition like pneumonia, the lung space gets filled up by liquid and pus and the debris of the dead tissues instead of gas.
Emphysema is a condition in which the inflammation in the lungs causes the dilation and destruction of alveoli. In addition to the loss of alveoli, the cellular walls of air sacs begin to harden and lose their elasticity. This makes it difficult to expel air from the lungs (a condition called air trapping). This explains why exhaling rather than inhaling is usually more difficult in people with emphysema. Pneumonia is an infection that inflames the alveoli in one or both lungs and can result in the air sacs filling with pus.