Building-related illness is described as an illness due to air quality problems; which are among typical symptoms?

• A. Fever and nausea
• B. Joint pain
• C. Asthma, allergies, and hypersensitivity
• D. Diarrhea

Answer: (C)

Indoor air quality problems in a building tend to trigger symptoms that are respiratory or immune-mediated, rather than general systemic issues. The option that fits this pattern best is asthma, allergies, and hypersensitivity, because these reflect airway inflammation and immune reactions caused by indoor contaminants like mold, dust, and chemicals. Fever and nausea usually point to infections, while joint pain or diarrhea aren’t typical responses to indoor air quality problems. So the correct set of symptoms aligns with respiratory/allergic reactions to built-environment exposures.