It's a disorder if it interferes with your life. It's an addiction if you are unable to separate yourself from an (external) source of disorder (like alcohol).

It's a disorder if it interferes with your life. It's an addiction if you are unable to separate yourself from an (external) source of disorder (like alcohol). (We don't say people with internaly manifested neurochemical/ behavioral disoi rders (depression, OCD) are addicted to their imbalances)