American Board of Internal Medicine (ABIM) Certification Practice Exam

Which condition is characterized by nonspecific clinical appearance after minor skin trauma?

1. Dermatitis

2. Cellulitis

3. Impetigo

4. Psoriasis

The correct answer is: Cellulitis

Cellulitis is characterized by a nonspecific clinical appearance that often develops after minor skin trauma. This condition typically manifests as redness, swelling, warmth, and tenderness in the affected area, which may not present with distinct or unique features distinguishable from other skin infections. The nonspecific nature stems from the fact that cellulitis can occur in various settings and can be caused by different microorganisms, most commonly streptococci and staphylococci. In contrast, dermatitis usually presents with more specific signs such as itching, and inflammation and is often linked to an allergic or irritant response. Impetigo is localized and often presents with honey-colored crusts primarily on the face, suggesting a specific type of infection. Psoriasis, on the other hand, is a chronic skin condition known for its distinct thick, scaly plaques, making the clinical appearance well-defined rather than nonspecific. Therefore, the characteristics of cellulitis align closely with the question's focus on nonspecific symptoms following minor trauma.