1.4 Chemical Determination. Proteins are complex, organic compounds composed of many amino acids linked together through peptide bonds and cross-linked between chains by sulfhydryl bonds, hydrogen bonds and van der Waals forces.
Common causes of pleurisy include trauma, postcardiac injury, infection (i.e., viral, bacterial, or parasitic), respiratory illness, caustic exposure (i.e., drug-induced), autoimmune disease, and malignancy (TABLE 1).
Pleurisy can be accompanied by a fluid buildup that puts pressure on the lungs and causes them to stop working properly. This fluid accumulation is called a pleural effusion. This fluid may initially act like a cushion, causing the chest pain to disappear.