What is the sudoriferous gland disorder characterized by a lack of sweat called?

Anhidrosis is the term used to describe the condition characterized by a lack of sweat production. This can result from various factors, including genetic conditions, damage to the sweat glands, or certain medical treatments. Sweating is essential for regulating body temperature and cooling the skin, so a deficit in this function can lead to overheating and other health issues.

Given this context, hyperhidrosis, which is the excessive production of sweat, stands in contrast to anhidrosis. Dehydration refers to a state where the body loses more fluids than it takes in, affecting overall hydration rather than specifically sweat production. Seborrhea is a skin condition characterized by an overproduction of sebum, not sweat. Therefore, anhidrosis is clearly the most accurate term to describe the absence of sweat, solidifying its position as the correct answer.