Byssinosis not brown. Brown lung can ultimately result in narrowing of the airways, lung scarring and death from infection or respiratory failure. Patient history should reveal exposure to cotton, flax, hemp, or jute dust. Diagnostic tests include a lung function test and a chest x ray or CT scan. Measurable change in lung function before and after working shifts is key to diagnosis. Patients suffering from byssinosis show a significant drop in FEV1 over the course of work shift. Chest radiographs show areas of opacity due to fibrosis of the pulmonary parenchyma. Affected workers should be offered alternative employment. Continued exposure
Blackleg (disease) Blackleg (disease) Blackleg, black quarter, quarter evil, or quarter ill () is an infectious bacterial disease most commonly caused by "Clostridium chauvoei", a Gram-positive bacterial species. It is seen in livestock all over the world, usually affecting cattle, sheep, and goats. It has been seen occasionally in farmed bison and deer. The acute nature of the disease makes successful treatment difficult, and the efficacy of the commonly used vaccine is disputed. Most losses due to blackleg occur when the cattle are between the ages of six months and two years, although it can occur when they are as young as