Dust Diseases

Silicosis

What is silicosis?

Over the past 15 years in Australia, there has been an increase in silicosis – a serious lung condition caused by inhaling very fine silica dust.

Silicosis is a long-term lung disease caused by inhaling large amounts of crystalline silica dust, usually over many years. Silica is a substance naturally found in certain types of stone, rock, sand and clay. Working with these materials can create a very fine dust that can be easily inhaled.

When silica dust enters the lungs, it causes the formation of scar tissue, which makes it difficult for the lungs to take in oxygen.

Symptoms of silicosis

In its early stages, silicosis may not cause any noticeable symptoms.  As the condition develops, it is common to experience:

  • Ongoing shortness of breath 
  • A long-lasting or persistent cough
  • Fatigue and low energy 
  • Chest discomfort 
  • Unintentional weight loss 

These symptoms typically worsen over time, even after you stop being exposed to silica dust. Everyday tasks like walking or climbing stairs can become difficult, and you may struggle with appetite or sleep.

Receiving a diagnosis

If your doctor suspects you may have silicosis, they’ll begin by discussing your symptoms and checking your lungs during a physical examination. To get a clearer picture, you might have to be referred to a lung specialist and asked to undergo one or more of the following tests: 

  • Chest X-ray 
  • Chest CT scan 
  • Lung function tests
  • Blood tests 
  • A 6-minute walk test to assess your breathing during activity 
  • Bronchoscopy with possible tissue biopsy 
  • Ultrasound imaging 

These tests help confirm a diagnosis and determine how your lungs have been affected. 

Treatment of silicosis

Silicosis causes permanent lung damage, and unfortunately, there is no cure. The speed at which symptoms worsen can vary from person to person. There are steps you can take to manage the condition and maintain a better quality of life: 

  • Avoid any further exposure to silica dust 
  • Stop smoking or vaping 
  • Maintain a healthy diet and stay physically active 
  • Keep up with recommended vaccinations, like the annual flu shot

Living with a chronic condition can also affect your mental wellbeing, so talking to a mental health professional might be useful. Depending on your symptoms, your doctor may suggest treatments to ease breathing and manage complications, such as:

  • Inhalers
  • Medications that could slow lung scarring 
  • Cough medicines 
  • Oxygen therapy if your blood oxygen is low 
  • Lung lavage (a procedure that flushes out the lungs) 

In very advanced cases, a lung transplant may be considered. 

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