What is true regarding byssinosis
**Core Concept**
Byssinosis is a respiratory disease caused by inhalation of cotton dust, leading to narrowing of the airways and decreased lung function. It is also known as brown lung disease, primarily affecting workers in the textile industry.
**Why the Correct Answer is Right**
The pathophysiology of byssinosis involves the formation of airway obstruction due to the inhalation of cotton dust. The dust particles trigger an inflammatory response, leading to the release of histamine and other mediators, which cause bronchoconstriction and mucus production. The condition is characterized by a reduction in forced expiratory volume (FEV1) and forced vital capacity (FVC) on spirometry. The exact mechanism of byssinosis is not fully understood, but it is believed to involve the activation of eosinophils and the release of cytokines.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the primary cause of byssinosis.
**Option B:** This option is incorrect because it does not specify the correct type of dust responsible for byssinosis.
**Option C:** This option is incorrect because it does not accurately describe the clinical presentation of byssinosis.
**Clinical Pearl / High-Yield Fact**
Byssinosis is often referred to as the "brown lung disease" due to the brown color of the cotton dust that is inhaled by workers. Early diagnosis and prevention are crucial in managing this occupational disease.
**Correct Answer:** C.