A person was found dead with bluish green frothy discharge at the angle of mouth and nostrils. What is the diagnosis ?
**Core Concept**
The bluish green frothy discharge at the angle of mouth and nostrils is a classic sign of a specific type of death, which is often associated with a particular type of poisoning. This phenomenon occurs due to the release of a toxic substance that affects the respiratory system, leading to the characteristic discharge.
**Why the Correct Answer is Right**
The presence of bluish green frothy discharge is indicative of cyanide poisoning. Cyanide inhibits the cytochrome c oxidase enzyme in mitochondria, disrupting cellular respiration and leading to tissue asphyxia. This results in the release of a frothy, bluish green substance, which is a mixture of blood, saliva, and mucus. The respiratory system is affected, causing the characteristic discharge at the angle of mouth and nostrils.
**Why Each Wrong Option is Incorrect**
**Option A:** Strychnine poisoning typically presents with muscle convulsions and rigidity, but it does not cause frothy discharge.
**Option B:** Carbon monoxide poisoning leads to cherry red discoloration of the skin and mucous membranes, not bluish green froth.
**Option C:** Hydrogen sulfide poisoning causes a garlic-like odor, but the discharge is not typically frothy or bluish green.
**Clinical Pearl / High-Yield Fact**
Cyanide poisoning is often associated with the use of certain chemicals, such as hydrogen cyanide gas or sodium cyanide, and can be treated with antidotes like hydroxocobalamin or cyanokit.
**Correct Answer: C. Cyanide poisoning. Cyanide poisoning.**