Which is a noveneral form of treponemal infection-a) Yawsb) Pintac) Syphilisd) GV

**Core Concept**
The question is testing the student's knowledge of different forms of treponemal infections, which are caused by the bacterium *Treponema pallidum*. These infections are characterized by their distinct clinical manifestations and geographic distributions.

**Why the Correct Answer is Right**
Pinta is a noveneral form of treponemal infection that is endemic in certain regions of Central and South America. It is characterized by a primary skin lesion, followed by a rash and eventually, a pigmented skin lesion. Pinta is caused by *Treponema carateum*, which is a subspecies of *Treponema pallidum*. The infection is transmitted through skin-to-skin contact and typically affects children.

**Why Each Wrong Option is Incorrect**
**Option A:** Yaws is another noveneral form of treponemal infection, but it is more commonly found in tropical regions and is characterized by a primary skin lesion, followed by a rash and eventually, a large lesion on the jaw or legs. Yaws is caused by *Treponema pallidum subspecies pertenue*.
**Option B:** Bejel (also known as endemic syphilis) is a form of treponemal infection, but it is more commonly found in the Middle East and North Africa. It is characterized by a primary skin lesion, followed by a rash and eventually, a chronic skin condition.
**Option C:** Syphilis is a sexually transmitted form of treponemal infection, which is characterized by a primary skin lesion, followed by a rash, and eventually, a systemic infection that can affect multiple organs.
**Option D:** GV (Gumma Venereum) is not a recognized form of treponemal infection.

**Clinical Pearl / High-Yield Fact**
Remember that treponemal infections can be classified into three main categories: noveneral (yaws, pinta, bejel), venereal (syphilis), and non-venereal (bejel). Each of these categories has distinct clinical manifestations and geographic distributions.

**Correct Answer:** D.