What is the technical term for "bitten nails"?

The technical term for "bitten nails" is onychophagy. This term specifically describes the habit or condition of biting the nails, which often leads to noticeable damage to the nail and surrounding skin. Onychophagy can be driven by stress, anxiety, or other behavioral factors, and it is important for beauty and health professionals to identify it when assessing clients’ nail conditions.

The other terms provided refer to different conditions or anatomical terms. Tinea refers to a fungal infection, often characterized by a ring-shaped rash on the skin or nails but does not relate to nail biting. Pedis specifically pertains to athlete's foot, another fungal condition affecting the feet. Phalanges are the bones in the fingers and toes and do not directly relate to a condition or habit involving nails. Understanding these terms can help distinguish between various nail-related issues and conditions in the context of manicuring and nail care.