Anyone can feel sad from time to time, but a person with clinical depression experiences "feelings of sadness, loss, anger or frustration which interfere with everyday life for an extended period of time," according to the National Institutes of Health (NIH). Signs of depression are more than just feeling low. Important symptoms of depression also include sleeping problems, appetite changes and guilt. If a person suffering from depression is experiencing suicidal thoughts, medical help should be sought right away.
Sleeping Problems
Trouble sleeping is one sign of depression, according to the NIH. A person may have problems falling asleep, or staying asleep during the night. On the other hand, a person may excessively sleep at night (more than 10 hours every day) or during the day. As a result of sleeping problems, the person may feel fatigued and have a lack of energy. Due to the lack of energy, someone suffering from depression may become inactive, and withdraw from important activities and people. In addition, a depressed person may not find enjoyment in previously pleasurable activities.
Appetite Changes
Changes in appetite are another possible sign of depression. The NIH points out that these appetite changes will be dramatic, and can lead to weight gain or weight loss.
Self-Hate and Guilt
Two common signs of depression are self-hate and guilt, according to the NIH. A person may feel worthless, or experience self-hate and inappropriate guilt as a result of depression. If the depression was caused by a life-changing event, like a death in the family or change in economic status, the person experiencing depression may blame herself. Depression patients may also experience agitation, restlessness and irritability.
Concentration Issues
An individual suffering from depression may also have problems concentrating on a task, according to the NIH, or may drift in and out of conversations. The lack of concentration can affect a depressed person's quality of work at school or the office.
Suicidal Thoughts
The most serious sign of depression, according to the NIH, is suicidal thoughts. Feelings of hopelessness, which can progress into thoughts of suicide and death, is common. In some patients, these thoughts of death and suicide can escalate into attempts. Should this be the case, immediate medical help should be sought.
