Pennsylvania Esthetician State Board Practice Exam

The term that describes foul-smelling perspiration due to the activity of yeast and bacteria on the skin is bromidrosis. This condition arises when sweat interacts with the skin's microorganisms, resulting in an unpleasant odor. The presence of bacteria feeds on the sweat, especially in areas where moisture and warmth are prevalent, leading to this specific type of body odor.

In contrast, lentigo refers to a benign skin condition characterized by small brown spots on the skin, often due to sun exposure, and is unrelated to perspiration or odor. Chemical change pertains to a transformation that alters a substance's chemical composition, which does not apply in this context of body odor. Protonosis, while it may imply knowledge of something, is not a recognized term in dermatological or esthetic terminology related to perspiration.

Understanding the specific terminology used in esthetics is crucial for identifying and addressing skin conditions effectively, particularly those that involve odor and sweat.