What condition is characterized by excess perspiration caused by heat?

The condition characterized by excess perspiration caused by heat is defined as hyperhidrosis. This condition involves an overactive sweat response, leading to excessive sweating in various situations, particularly in response to heat, physical exertion, or stress. Individuals with hyperhidrosis may experience sweating beyond what is necessary for temperature regulation, which can impact daily activities and quality of life.

In contrast, hypohidrosis refers to reduced sweating, which is the inability to sweat normally and can be problematic in situations requiring thermoregulation. Oligohidrosis is similar but usually denotes minimal sweating, while adidrosis indicates a complete lack of sweat. Understanding these differences helps in recognizing the symptoms and potential treatments for various sweat-related conditions.