Asbestos intoxication

Asbestos intoxication, also known as asbestosis, is a chronic lung disease caused by the inhalation of asbestos fibers over a prolonged period. It is classified as a pneumoconiosis — a group of lung diseases caused by inhaling certain dusts that damage the lungs. Asbestosis is not a genetic disorder but rather an environmentally and occupationally acquired condition. The inhaled asbestos fibers become lodged in the lung tissue, causing chronic inflammation and progressive fibrosis (scarring) of the lung parenchyma. This scarring stiffens the lungs and impairs gas exchange, leading to progressive respiratory insufficiency. Key symptoms include progressive exertional dyspnea (shortness of breath during physical activity), persistent dry cough, chest tightness, and in advanced cases, clubbing of the fingers. Bibasilar inspiratory crackles are a characteristic finding on physical examination. The disease primarily affects the respiratory system, but complications can extend to the pleura (causing pleural plaques, pleural thickening, and pleural effusions) and may increase the risk of developing malignant mesothelioma and lung cancer. The latency period between initial asbestos exposure and clinical manifestation is typically 10 to 40 years. There is no curative treatment for asbestosis. Management is primarily supportive and includes cessation of further asbestos exposure, pulmonary rehabilitation, supplemental oxygen therapy for hypoxemia, and treatment of complications such as respiratory infections. Influenza and pneumococcal vaccinations are recommended to reduce the risk of pulmonary infections. In severe end-stage disease, lung transplantation may be considered. Regular monitoring with pulmonary function tests and imaging is essential for disease surveillance and early detection of malignant complications.

Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.

Common questions about Asbestos intoxication