Oregon Esthetician State Board

What skin condition results in excessive heat exposure and burning, itching skin?

1. Comedo

2. Miliaria rubra

3. Keloid

4. Excoriation

The correct answer is: Miliaria rubra

Miliaria rubra, also known as heat rash or prickly heat, is a skin condition caused by excessive heat exposure. It often occurs in hot and humid weather when sweat glands become clogged, leading to inflammation. The condition is characterized by burning and itching sensations on the skin. This reaction occurs because sweat is unable to escape due to blocked pores, resulting in red, itchy bumps and a sensation of prickliness on the skin’s surface. Understanding the features of miliaria rubra helps clarify its distinction from other skin conditions. Comedo, for example, refers to clogged pores that can lead to acne but are not primarily caused by heat exposure. Keloids are raised scars that occur due to excessive collagen formation during the healing process, which does not relate to heat. Excoriation, on the other hand, involves the act of scratching or damaging the skin, rather than a reaction to heat exposure. Thus, miliaria rubra is the correct response, as the symptoms of burning and itching skin directly stem from excessive heat and the resulting effects on sweat glands.