Article in English: You may suspect that your friend is depressed by the way he or she is acting. If you are unsure, there are several common signs of depression that may help you to determine if something is wrong. Some of the common symptoms of depression include:  Persistent sad feelings or lack of motivation Loss of interest in hobbies, friends and/or sex Excessive fatigue or feeling slowed down in thinking, speaking, or movement Increased or decreased appetite Trouble sleeping or sleeping too much Trouble concentrating and making decisions Irritability Feelings of hopelessness and/or pessimism Weight loss or gain Thoughts of suicide Aches pains or digestive problems Feelings of guilt, worthlessness, and/or helplessness As soon as you suspect that your friend is suffering from depression, you should encourage him or her to see a doctor. Your friend may be denying that there is a problem or maybe even embarrassed to admit that there is a problem. Because some depression symptoms are atypical, many nonclinical people do not associate them with being depressed; apathy and numbness are often overlooked as depression symptoms. The extra encouragement of a friend may be all that your friend needs to seek help.  Say something like, “I'm worried about you and I think that you should talk to a doctor about how you have been feeling lately.” Encourage your friend to follow up with a psychologist as well. While your friend may agree to seek help, he or she may be too depressed to follow through with making and keeping an appointment. By offering your ongoing help, you can ensure that your friend will actually get the help he or she needs.  Offer to make the appointment for your friend and even go with him or her to the doctor to offer your support. Offer to help your friend make a list of questions to ask the doctor before the appointment.

Summary in Vietnamese:
Lưu tâm tới những triệu chứng trầm cảm ở bạn mình. Động viên người bạn đó trao đổi với bác sĩ. Hãy để người bạn đó biết rằng bạn sẵn sàng giúp đỡ.