Pink disease is seen in poisoning with –
**Core Concept**
Pink disease, also known as acrodynia, is a rare condition characterized by a pink discoloration of the hands and feet due to exposure to a specific toxic substance. This condition is associated with the accumulation of a particular metal in the body, leading to its systemic effects.
**Why the Correct Answer is Right**
The correct answer is linked to the pathophysiology of pink disease, which involves the accumulation of mercury in the body. Mercury is a potent neurotoxin that can cause damage to the nervous system, kidneys, and other organs. In the context of pink disease, mercury exposure leads to the deposition of mercury in the skin, resulting in a characteristic pink discoloration. This is due to the mercury's ability to bind to keratin, a protein found in skin, hair, and nails.
**Why Each Wrong Option is Incorrect**
**Option A:** Lead poisoning is associated with a range of systemic effects, including neurological damage, anemia, and renal impairment. However, it is not typically characterized by a pink discoloration of the skin.
**Option B:** Arsenic poisoning can cause a range of systemic effects, including gastrointestinal symptoms, neurological damage, and skin lesions. However, it is not typically associated with a pink discoloration of the skin.
**Option C:** Organophosphate poisoning can cause a range of systemic effects, including neurological damage, respiratory failure, and cardiac arrest. However, it is not typically associated with a pink discoloration of the skin.
**Clinical Pearl / High-Yield Fact**
Pink disease is a classic example of a condition caused by mercury exposure, and it highlights the importance of avoiding exposure to this toxic substance. Mercury is a potent neurotoxin that can cause significant harm to the nervous system, kidneys, and other organs, and it is essential to take precautions when handling mercury-containing products.
**Correct Answer:** C.