In sebaceous glands accumulation of sebum leads to
**Core Concept**
Sebaceous glands are exocrine glands responsible for the production and secretion of sebum, an oily substance that helps to lubricate and protect the skin and hair. The accumulation of sebum in sebaceous glands can lead to various skin disorders.
**Why the Correct Answer is Right**
The accumulation of sebum in sebaceous glands is a hallmark of acne vulgaris, a common skin condition characterized by the formation of comedones (blackheads or whiteheads), papules, pustules, and cysts. The sebum accumulation can lead to the formation of microcomedones, which are small, closed comedones that can eventually rupture, leading to inflammation and the development of acne. The role of sebum in acne is complex and involves the interaction of multiple factors, including hormonal influences, bacteria, and inflammation.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it doesn't directly relate to the accumulation of sebum in sebaceous glands. While sebum can contribute to skin conditions like eczema, it's not the primary factor in this condition.
**Option B:** This option is incorrect because it's a type of skin condition that can be caused by various factors, including genetics, allergies, and environmental factors, but it's not directly related to sebum accumulation in sebaceous glands.
**Option C:** This option is incorrect because it's a type of skin condition that's caused by a group of fungi, not by sebum accumulation in sebaceous glands.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that the accumulation of sebum in sebaceous glands can lead to the formation of microcomedones, which are small, closed comedones that can eventually rupture, leading to inflammation and the development of acne.
**Correct Answer: D. Acne vulgaris**