What is a flat discoloration on the skin, such as a freckle or healed pimple mark, called?

A flat discoloration on the skin, such as a freckle or a healed pimple mark, is referred to as a macule. Macules are small, flat, distinct discolored areas of skin that are different in color from the surrounding tissue. They can be a variety of colors, including brown, red, or white, and lack any elevation or texture change when felt by touch. This characteristic of being flat and discolored distinguishes macules from other skin conditions that may be raised or involve different textures.

While the other terms have their definitions, they do not accurately describe what a macule is. Nodules, for instance, are raised solid lumps that can occur deeper in the skin layers. Lesion is a broader term that encompasses any abnormal tissue or injury, which can include macules but is not specific to flat discolorations. The term "kriller" is not a recognized medical term in dermatology. Thus, the correct identification of a flat discoloration as a macule is based on its specific features of being flat, distinct, and discolored.