Community Medicine (PSM) · Occupational Health and Legislation (ESI, Factories Act)

Byssinosis is an occupational lung disease caused by dust from which material, and its characteristic symptom pattern is known as:

  • A Silica dust; progressive massive fibrosis
  • B Coal dust; black lung disease
  • C Asbestos fibres; mesothelioma risk
  • D Cotton/flax/hemp dust; Monday fever (chest tightness on return to work)
Correct answer: D. Cotton/flax/hemp dust; Monday fever (chest tightness on return to work)

Explanation

Byssinosis is caused by inhalation of cotton, flax, hemp, or jute dust and manifests as Monday fever — chest tightness, dyspnea, and wheezing on the first working day after a rest day (weekend), with symptoms improving as the week progresses. Pathogenesis involves dust-mediated histamine release and bronchospasm. Chronic exposure causes progressive airflow obstruction. Silicosis (quartz), coal worker's pneumoconiosis, and asbestosis are distinct pneumoconioses with different dust exposures and pathology.

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

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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