### Patient: Doctor, I have been feeling very low lately. I have lost interest in things that used to make me happy. I also feel like everyone is against me and I don't have a purpose in life. I have been turning to alcohol and drugs to cope. What is wrong with me?
### Doctor: It sounds like you may be experiencing depression. Depression is a mood disorder that can cause persistent feelings of sadness, hopelessness, and loss of interest in things you once enjoyed. It is also common for people with depression to turn to substance abuse as a way to cope. It is important that we discuss treatment options and make a plan to manage your symptoms.