I think i'm depressed, how can i tell?

Major depression: is a mood disorder lasting a minimum of two weeks. Depressive sx's may include low mood, irritability, anger, ^ or v sleep, change in appetite, feelings of helplessness or hopelessness, v energy, v self-esteem, feelings of guilt. V motivation, absence of joy,v concentration, v memory & suicidal thoughts.

Depression: I commend you for being concerned about your Emotional Health! At age 16, problems and conflicts with parents, relationships with turmoil and separations, doubts about identity can cause Depression. You may have sadness, crying spells, feelings of hurt, disappointment, resentment, frustration, helplessness, hopelessness, lack of interest and energy See a Therapist to cope with stressors in life

Depressed?: Depression occurs when a person not only feels sadness and agitation but other symptoms as not sleeping well /sleeping excessively, not eating/eating excessively, nightmares and otherwise disturbed sleep, social withdrawal from friends and previously enjoyable activities. Negative views about self, the world and future can occur. Sometimes thoughts of self harm are present. Seek help if depressed.