The concept of 'sick building syndrome' is distinct from 'building-related illness'. The defining characteristic of sick building syndrome is that:

• A Symptoms persist after leaving the building and a specific pathogen is identified
• B Only HVAC systems in sealed buildings cause the syndrome
• C Symptoms are non-specific, temporally linked to building occupancy, and resolve upon leaving the building without a specific attributable cause ✓
• D Legionella pneumophila is the most common cause

Explanation

Sick building syndrome (SBS) is defined by non-specific symptoms (headache, fatigue, eye/nose/throat irritation, dry skin, difficulty concentrating) that affect building occupants, improve upon leaving the building, and have no single identifiable causal agent. This contrasts with building-related illness (BRI) where a specific cause (e.g., Legionella, hypersensitivity pneumonitis from humidifiers) is identified and symptoms persist. Legionella causes Legionnaires' disease (a BRI), not SBS. HVAC problems are a common contributor to SBS but not the sole mechanism.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

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Written and medically reviewed by the StethoPrep medical team.