A drug addict was caught hold of by narcotic drug addiction department. He was found to have jet black tongue and teeth. Likely drug addiction is of:
**Core Concept**
The patient's presentation of a jet black tongue and teeth is suggestive of a specific type of substance abuse. This condition is caused by the deposition of melanin-like pigments in the oral mucosa and teeth, resulting from the breakdown of certain substances.
**Why the Correct Answer is Right**
The likely cause of this condition is the use of **heroin** or other **opioids**. Heroin acts as a pro-oxidant, leading to the formation of free radicals that cause the oxidation of proteins and lipids in the oral mucosa, resulting in the deposition of melanin-like pigments. This condition is known as **"black tongue"** or **"black teeth"**. The exact mechanism involves the interaction of heroin with the oral mucosa, leading to the activation of oxidative stress pathways and the subsequent deposition of pigments.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because **cocaine** use is associated with a different type of oral manifestation, known as "coca leaf stomatitis," which presents with inflammation and ulcers in the oral mucosa, rather than pigmentation.
* **Option B:** This option is incorrect because **amphetamine** use is associated with a condition known as "meth mouth," which presents with severe dental decay, gum recession, and tooth loss, rather than pigmentation.
* **Option D:** This option is incorrect because **alcohol** use is associated with a condition known as "alcoholic gastritis," which presents with inflammation and ulceration of the gastric mucosa, rather than pigmentation in the oral mucosa.
**Clinical Pearl / High-Yield Fact**
When evaluating patients with suspected substance abuse, it's essential to consider the specific oral manifestations associated with different substances. A black tongue or teeth can be a red flag for heroin or opioid use.
**Correct Answer: C. Heroin**