Cong. rubella manifestations are all except – a) Rash appears first on trunkb) Pre-auricular L. nodesc) Arthralgiad) Retinopathy

**Core Concept**
Congenital rubella syndrome (CRS) is a condition that occurs when the rubella virus infects a pregnant woman, particularly during the first 20 weeks of gestation, and is transmitted to the fetus. This can lead to various congenital anomalies and manifestations.

**Why the Correct Answer is Right**
The manifestations of CRS include a range of clinical features, including a characteristic rash that appears first on the face, rather than the trunk, and is often accompanied by pre-auricular lymphadenopathy (b). Arthralgia (c) can also occur due to the viral infection. Retinopathy (d) is another manifestation of CRS, which can lead to visual impairment in affected individuals.

**Why Each Wrong Option is Incorrect**
**Option A:** Rash appearing first on the trunk is incorrect because in CRS, the rash typically starts on the face, particularly on the forehead, and then spreads to other areas of the body.
**Option B:** Although pre-auricular lymphadenopathy is a characteristic feature of CRS, it is not the correct answer in this context, as we are looking for the manifestation that does not belong.
**Option C:** Arthralgia is indeed a manifestation of CRS, but it is not the correct answer because we are looking for the option that is not typically associated with the condition.

**Clinical Pearl / High-Yield Fact**
The risk of congenital anomalies due to rubella infection is highest when the infection occurs during the first 12 weeks of gestation, and the risk decreases significantly after 20 weeks of gestation.

**Correct Answer: D. Retinopathy**