Phossy jaw is seen in?
**Core Concept**
Phossy jaw, also known as osteonecrosis of the jaw, is a condition characterized by necrosis (death) of the jawbone tissue. This condition is typically associated with exposure to phosphorus, a toxic substance that can cause bone damage and necrosis.
**Why the Correct Answer is Right**
Phossy jaw is a historical occupational hazard that occurred in workers exposed to phosphorus in match factories. The phosphorus vapors inhaled by these workers caused damage to the jawbone, leading to necrosis and disintegration of the bone tissue. This condition is now rare due to the regulation of phosphorus handling and the use of safer alternatives.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Phossy jaw is not typically associated with radiation exposure. While radiation can cause bone damage and necrosis, it is not the primary cause of Phossy jaw.
**Option B:** This option is incorrect because Phossy jaw is not a common condition seen in patients with diabetes. While diabetes can cause a range of complications, Phossy jaw is not typically one of them.
**Option C:** This option is incorrect because Phossy jaw is not a condition caused by a viral infection. While certain viral infections can cause bone damage and necrosis, Phossy jaw is specifically associated with phosphorus exposure.
**Clinical Pearl / High-Yield Fact**
Phossy jaw is a classic example of an occupational disease that highlights the importance of proper handling and regulation of hazardous substances in the workplace.
**Correct Answer: D. Phossy jaw is seen in workers exposed to phosphorus in match factories.**