Is cutting yourself considered a sign of depression?

Sometimes: Self inflicted mutilation by cutting is one way that some people cope. It is not a healthy coping mechanism. People may cut themselves because they feel emotionally numb & it allows them to feel something. Some cut to distract from anxiety, depression or stress. Some people cut as a form of self- punishment. Some cut in the mistaken thought that it will let out evil or bad parts of themselves.

Cutting: Yes, among other things, such as anxiety, anger and control issues over one's body and one's life. There is no one answer for this. As brutally simple as the act seems in and of itself, the emotional impetus behind it are often multilayered, contradictory, complex, and deeply personal.