**Core Concept**
A carbuncle is a large, painful skin lesion caused by a group of interconnected boils or furuncles, typically resulting from Staphylococcus aureus infection. It is characterized by a collection of inflamed, pus-filled sacs that are interconnected, forming a larger abscess.

**Why the Correct Answer is Right**
A carbuncle differs from a furuncle in that it involves multiple interconnected abscesses, whereas a furuncle is a single, isolated boil. The interconnected abscesses of a carbuncle lead to more extensive tissue damage and a higher risk of complications, such as fever, chills, and sepsis. The pathophysiology of a carbuncle involves the spread of infection through the lymphatic system, leading to the formation of multiple abscesses.

**Why Each Wrong Option is Incorrect**
**Option A:** A carbuncle is typically caused by Staphylococcus aureus infection. This statement is true, so it cannot be the correct answer.
**Option B:** A carbuncle is a type of skin lesion that is characterized by a collection of interconnected abscesses. This statement is true, so it cannot be the correct answer.
**Option C:** A carbuncle is not typically caused by a viral infection. This statement is true, but it is not the correct answer because we are trying to find the option that is NOT true about carbuncle. However, this option is not the best choice for a "NOT true" question, since it is a true statement.
**Option D:** A carbuncle is a type of skin lesion that is typically caused by a bacterial infection. This statement is true, but it is not the correct answer because we are trying to find the option that is NOT true about carbuncle.

**Clinical Pearl / High-Yield Fact**
It is essential to distinguish between a carbuncle and other skin lesions, such as a furuncle or a cysticercosis, to ensure proper treatment and prevent complications. A carbuncle requires prompt medical attention, including antibiotics and incision and drainage, to prevent the spread of infection and reduce the risk of complications.

**Correct Answer: None of the above options are correct in the context of a "NOT true of carbuncle" question. However, since the question does not provide options, I will assume the correct answer is "The question is incomplete" or "The question does not provide enough information."