Okay, let's tackle this question about burn degrees. The question is asking what degree a dermoepidermal burn is. First, I need to recall the classification of burns based on depth. Burns are categorized into first, second, third, and fourth degrees.

First-degree burns affect only the epidermis, causing redness and pain. Second-degree burns involve the epidermis and part of the dermis. They cause blistering. Third-degree burns go through the entire dermis, leading to white or charred skin with no pain because the nerves are damaged. Fourth-degree burns involve deeper tissues like muscles and bones.

The term "dermoepidermal" suggests that both the epidermis and dermis are involved. That points to a second-degree burn. So the correct answer should be second-degree. Let me check the options again. The correct answer is B, which is second-degree. The other options: A would be first, C third, D fourth. Each of those is incorrect because they don't match the depth described. The clinical pearl here is that second-degree burns are partial-thickness, involving both skin layers mentioned. Students should remember that the presence of blisters is a key sign of second-degree burns.

**Core Concept**
Burns are classified by depth into first, second, third, and fourth degrees. Dermoepidermal involvement indicates a partial-thickness burn, corresponding to **second-degree** burns. This classification hinges on the layers of skin (epidermis and dermis) affected and the presence of blistering.

**Why the Correct Answer is Right**
Second-degree burns, also termed **partial-thickness burns**, damage both the epidermis and the upper dermis. Clinically, they present with pain, erythema, and blistering due to fluid accumulation in the dermis. The term "dermoepidermal" explicitly refers to this dual-layer injury. Healing occurs within 2–3 weeks with scar formation, as the dermal structures remain viable.

**Why Each Wrong Option is Incorrect**
**Option A:** First-degree burns only affect the epidermis, causing erythema and pain without blistering.
**Option C:** Third-degree burns involve full-thickness destruction of epidermis and dermis, with eschar formation and no pain due to nerve damage.
**Option D:** Fourth-degree burns extend beyond skin to subcutaneous tissue, muscle, or bone, causing irreversible necrosis.

**Clinical Pearl / High-Yield Fact**
Remember the "Rule of Nines" for burn assessment: second-degree burns are partial-thickness and blisters are pathognomonic. First-degree burns (sunburn) never blister, while third-degree burns are anesthetic due to nerve destruction.

**Correct Answer: B. Second-degree**

✓ Correct Answer: B. II