Professional and Linguistic Assessments Board (PLAB) Practice Exam

What is a common and benign skin condition characterized by a painful nodule on the ear?

1. Granuloma annulare

2. Chondrodermatitis nodularis helicis

3. Eczema herpeticum

4. Acne rosacea

The correct answer is: Chondrodermatitis nodularis helicis

The common and benign skin condition characterized by a painful nodule on the ear is chondrodermatitis nodularis helicis. This condition specifically affects the cartilage of the ear and is often triggered by pressure or trauma to the area, such as from sleeping on one side. The nodule presents as a painful, firm lesion, typically located on the helix of the ear. This condition is not only benign but also relatively common, especially among older adults. Its etiology relates to ischemia of the ear cartilage due to continuous pressure or friction, which can lead to the formation of a painful nodule. Granuloma annulare is primarily a self-limiting skin condition characterized by ring-shaped lesions and is not specifically associated with the ear or painful nodules. Eczema herpeticum refers to a herpetic infection that complicates existing eczema; it leads to vesicular lesions rather than nodules and is not a benign growth like chondrodermatitis. Acne rosacea is a chronic skin condition affecting the face, characterized by flushing, papules, and pustules, distinct from the described characteristics of the nodule on the ear. Thus, the choice of chondrodermatitis nodularis helicis is