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Extrinsic allergic alveolitis — DOccMed MCQ

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HardOccupational Lung DiseaseExtrinsic allergic alveolitisDOccMed

A maintenance worker reports cough and fever 6 hours after cleaning a contaminated metalworking-fluid sump. Symptoms settle by the next day but recur after similar jobs. Chest examination is normal between episodes. What is the most likely occupational diagnosis?

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Correct answer: C — Extrinsic allergic alveolitis related to metalworking-fluid mist

Recurrent flu-like episodes several hours after exposure to contaminated metalworking-fluid mist suggest hypersensitivity pneumonitis or extrinsic allergic alveolitis. The delayed systemic pattern is less typical of simple asthma. Management requires exposure investigation, engineering controls and respiratory assessment.

Reference: HSE Metalworking Fluids Guidance; COSHH Regulations