Silica dust allergy
Lung disease and irritation from crystalline silica.
About silica dust allergy
Respirable crystalline silica is fine dust released when materials such as stone, concrete, brick, sandstone and engineered worktops are cut, drilled, ground or polished. Unlike a true allergy, silica does not cause an IgE-mediated response; instead the tiny particles, once inhaled deep into the lungs, can cause irritation, inflammation and, over time, serious lung disease including silicosis and chronic obstructive pulmonary disease, and it increases the risk of lung cancer. Construction workers, stonemasons, quarry and foundry workers, and those fabricating engineered-stone worktops are among the most exposed.
Effects are usually the result of prolonged or heavy exposure rather than a single event, though intense dust can cause immediate irritation of the eyes, nose and throat with cough. Silicosis develops slowly over years and may cause breathlessness, a persistent cough and reduced exercise tolerance, sometimes progressing even after exposure stops. Because the damage is cumulative and often irreversible, prevention is far more effective than treatment, and symptoms of established disease do not simply resolve away from work.
Assessment is usually guided by occupational health and may include lung-function testing and chest imaging as part of health surveillance. The priority is controlling dust at source: water suppression, local exhaust ventilation, enclosed methods, good housekeeping and, where needed, correctly fitted respiratory protection. Silica-related diseases are reportable under RIDDOR, and exposure is regulated under COSHH. Because there is no cure for silicosis, minimising exposure throughout a working life is essential.
Common triggers
- Silica dust and products containing it
Symptoms
- Skin rash or dermatitis on exposed areas
- Sneezing, runny nose or watery eyes
- Coughing, wheezing or chest tightness
- Occupational asthma over time
Avoidance & management
- Use recommended protective equipment and ventilation
- Follow workplace exposure controls
- Wash exposed skin promptly
- Report symptoms to occupational health
- Discuss adjustments or alternatives with your employer
Sources & references
Allergy safety: what everyone should know
Mild-to-moderate reaction signs
- Itching, hives or a raised rash
- Swelling of lips, face or eyes
- Tingling mouth, sneezing, runny nose
- Stomach pain, nausea or vomiting
Anaphylaxis — call 999 (UK) or 112 (EU) immediately
- Difficult or noisy breathing, wheeze, persistent cough
- Swelling of the tongue or tightness in the throat
- Dizziness, collapse, pale and floppy (young children)
- Use an adrenaline auto-injector (e.g. EpiPen) at once if prescribed, then call an ambulance even if symptoms improve
Allergy or intolerance? A true allergy involves the immune system and can escalate quickly; an intolerance (e.g. lactose intolerance) is unpleasant but not life-threatening. The symptoms overlap, so self-diagnosis is unreliable.
Getting tested: home-testing kits based on IgG are not diagnostically valid. If you suspect an allergy, ask a GP for referral to an allergy clinic for skin-prick or specific-IgE testing and a supervised food challenge where appropriate.