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Title: What Are the Symptoms and Signs of Chronic Silicosis?
NOTE: There may be no symptoms in the early stages.
Initial stages: Dry or non-productive cough when exposed to the irritant
Advanced stages: Cough that is prolonged and distressing, with sputum production
Initially only while exercising
Later shortness of breath during normal activity
Wheezing if chronic obstructive bronchitis or asthma are also present
Pneumothorax and respiratory failure in advanced states
Significant X-ray changes after 15-20 years of exposure