What is the medical term for prickly heat, characterized by small red vesicles and itchy skin?

The correct answer is Miliaria rubra. This term specifically refers to prickly heat, a skin condition that occurs when sweat ducts become blocked, leading to irritation and the formation of small red vesicles. The condition typically appears in hot, humid weather and is often accompanied by itching and discomfort.

Miliaria rubra is particularly associated with a more inflamed type of heat rash, making it distinct from other skin conditions that may present with similar symptoms. Understanding this terminology is essential for recognizing and addressing skin reactions effectively, especially in the beauty and cosmetology fields where skin health is paramount. Other choices listed, like psoriasis, eczema, and alopecia, refer to different dermatological conditions that have their own distinct characteristics and causes.