What is gnawing habit?

A gnawing habit refers to a repetitive behavior where an individual persistently bites or chews on something, often unconsciously. This can include habits like nail-biting, chewing on pens, or even excessive gum chewing. Such behaviors may arise from stress, anxiety, or boredom, and can lead to physical damage or discomfort if not addressed. It often serves as a coping mechanism to manage emotions or focus attention.