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
Progressive disease are also referred to as degenerative diseases. Not all chronic diseases are progressive: a chronic, non-progressive disease may be referred to as a "static" condition. "Progressive disease" can also be a clinical endpoint i.e. an endpoint in a clinical trial. There are examples of slowly and rapidly progressive diseases affecting all organ systems and parts of the body. The following are some examples of rapidly and slowly progressive diseases affecting various organ systems: Progressive disease Progressive disease or progressive illness is a disease or physical ailment whose course in most cases is the worsening, growth, or spread of the disease.