**Core Concept**
Kogoj's pustules are a histopathological feature associated with psoriasis, a chronic autoimmune skin condition. They are characterized by the formation of small, neutrophil-rich pustules within the epidermis, which are a hallmark of psoriatic lesions.

**Why the Correct Answer is Right**
Kogoj's pustules are formed due to the abnormal proliferation of keratinocytes and the subsequent accumulation of neutrophils within the epidermis. This process is mediated by the release of various inflammatory cytokines and chemokines, which attract neutrophils to the site of inflammation. The resulting pustules are composed of a mixture of neutrophils, keratinocytes, and other inflammatory cells, which can lead to the characteristic scaling and erythema seen in psoriasis.

**Why Each Wrong Option is Incorrect**
**Option A:** Kogoj's pustules are not typically seen in dermatitis, which is characterized by a different pattern of inflammation and immune cell infiltration.
**Option B:** While Kogoj's pustules are a feature of psoriasis, they are not a diagnostic hallmark of other autoimmune skin conditions, such as lupus or scleroderma.
**Option C:** Kogoj's pustules are not a feature of infectious skin diseases, such as impetigo or folliculitis, which are characterized by a different type of inflammatory response.

**Clinical Pearl / High-Yield Fact**
Kogoj's pustules are a distinctive feature of psoriasis, and their presence can be used to support a diagnosis of this condition. However, it's essential to note that psoriasis can present in various forms, including guttate, plaque, and pustular psoriasis, each with distinct clinical and histopathological features.

**Correct Answer:** D.