There is some controversy in the dermatology community as to whether or not the "dysplastic"/"atypical" nevus exists. Some have argued that the terms "dysplastic" and "atypical" only refer to diagnostic uncertainty, as opposed to biologic uncertainty, and that the lesion is either a nevus or melanoma from the very beginning, as opposed to some kind of "premalignant stage"; it is only the clinician who is unsure. Some have also argued that even if such nevi do exist, studies have shown that clinicians are unable to reliably identify them anyway, meaning there is no point to even using the concept.