Which of these conditions is NOT associated with sweating?

The selection of alopecia as the correct answer is based on its lack of association with the sweating process. Alopecia refers to the loss of hair from the scalp or body, which is primarily a condition related to hair follicles rather than the sweat glands.

In contrast, hyperhidrosis is characterized by excessive sweating, while anhidrosis refers to the inability to sweat, indicating a dysfunction of the sweat glands. Miliaria rubra, also known as heat rash, is linked to sweating as it occurs when sweat ducts become blocked, leading to an inflammatory response. Thus, while the first three options relate directly to the function or dysfunction of sweat glands, alopecia does not involve sweating in any context, making it the correct choice in this scenario.