What is modular prurigo?

Modular prurigo is characterized by the presence of firm, scaly, itchy nodules on the skin, which is why the selection of this answer is correct. The condition is often associated with itch and scratching, leading to the development of these nodules, which can resemble similar lesions seen in other conditions but are distinct in their firm texture and scaly appearance.

Unlike dermatitis caused by allergens, which is more diffuse and can manifest as redness and inflammation without the distinct nodules, modular prurigo specifically presents with the mentioned nodular form. Similarly, it is not classified as an infectious skin condition or a general form of eczema, both of which have different pathophysiological features and presentations. Eczema, for instance, often features inflammation and fluid-filled blisters rather than the solid nodules typical of modular prurigo. Thus, recognizing the defining characteristics of modular prurigo is essential for accurate diagnosis and subsequent management.