Spongiosis is seen in –
**Core Concept**
Spongiosis refers to the accumulation of fluid within the epidermis, leading to separation of keratinocytes. This phenomenon is a hallmark of certain dermatological conditions. The underlying principle involves **edema** and **keratinocyte** disruption.
**Why the Correct Answer is Right**
The correct answer is related to conditions where spongiosis is a characteristic feature, such as **eczematous dermatitis**. In eczematous dermatitis, spongiosis occurs due to the influx of fluid and inflammatory cells into the epidermis, causing keratinocytes to pull apart. This is mediated by various **cytokines** and **chemokines**.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it does not typically involve spongiosis.
**Option B:** Incorrect as it is more associated with **basal cell layer** pathology.
**Option C:** Incorrect because it involves a different type of skin pathology.
**Clinical Pearl / High-Yield Fact**
Spongiosis is a key feature of **eczematous dermatitis**, which includes conditions like **atopic dermatitis**. Recognizing spongiosis is crucial for diagnosing these conditions.
**Correct Answer:** D. Eczematous dermatitis.