What causes a chalazion?

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Enhance your knowledge with our differential diagnosis and management test. Explore diverse conditions impacting eyes and musculoskeletal systems with study guides, quizzes, and detailed explanations. Master the exam and excel in diagnosis.

Multiple Choice

What causes a chalazion?

Explanation:
A chalazion is caused by blockage of the outflow of a meibomian gland due to inspissated (thickened) lipid secretions. When the duct becomes obstructed, the gland’s secretions accumulate and provoke a sterile granulomatous inflammatory response in the gland wall, creating a firm, painless nodule within the eyelid. This mechanism explains why chalazia are typically non-tender and chronic, contrasting with acute, painful infections of eyelid glands (styes) and with other eye surface or tear drainage issues that involve different tissues and symptoms.

A chalazion is caused by blockage of the outflow of a meibomian gland due to inspissated (thickened) lipid secretions. When the duct becomes obstructed, the gland’s secretions accumulate and provoke a sterile granulomatous inflammatory response in the gland wall, creating a firm, painless nodule within the eyelid. This mechanism explains why chalazia are typically non-tender and chronic, contrasting with acute, painful infections of eyelid glands (styes) and with other eye surface or tear drainage issues that involve different tissues and symptoms.

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