What is the term for a slight depression on the epidermis caused by incorrect needle insertion or excessive pressure?

The term that accurately describes a slight depression on the epidermis caused by incorrect needle insertion or excessive pressure is "dimpling." This phenomenon occurs when the needle is not positioned correctly or is applied with too much force, leading to a temporary indentation in the skin's surface. This can happen during electrolysis treatments if the practitioner does not use the appropriate technique, highlighting the importance of proper training and skill in the procedure.

Dimpling is generally a cosmetic concern and does not indicate any deeper tissue damage, distinguishing it from conditions like scarring, which involves more significant tissue damage and can result in a permanent change in skin texture. Dermatitis refers to skin inflammation, which is unrelated to the physical alteration of the epidermis seen with dimpling. Atrophy refers to the thinning or loss of skin or tissue but does not specifically pertain to the immediate, reversible effects seen with improper needle use during electrolysis.