**Core Concept**
Rhinophyma is a severe form of rosacea characterized by a bulbous, red, and enlarged nose due to excessive oil production and thickening of the skin. It is a chronic condition that often affects individuals with a history of acne rosacea.

**Why the Correct Answer is Right**
Rhinophyma is caused by an imbalance in the skin's sebaceous glands, leading to overproduction of sebum. This results in the formation of telangiectasias (visible blood vessels) and an increase in the size of the nose due to hypertrophy of the skin and underlying bone. The condition is often associated with a background of acne, papules, and pustules.

**Why Each Wrong Option is Incorrect**
* **Option A:** is incorrect because it is not a recognized medical condition related to rhinophyma.
* **Option B:** is incorrect because it describes a different condition altogether, often associated with an allergic reaction or infection.
* **Option C:** is incorrect because it is a symptom of rhinophyma, not the condition itself.

**Clinical Pearl / High-Yield Fact**
Rhinophyma is often compared to a "bulbous nose" due to its characteristic appearance. It is essential to diagnose and treat rhinophyma early to prevent further complications, such as nasal obstruction and secondary infections.

**Correct Answer: C. Rhinophyma is characterized by a bulbous, red, and enlarged nose.**