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What are the symptoms of depression?
2026-04-05 22:00:32
An overview of depression symptoms and coping
Depression is a common mental health problem, mainly characterized by core symptoms such as persistent low mood, loss of interest, and lack of energy, and may be accompanied by secondary symptoms such as sleep disorders, changes in appetite, and decreased concentration. Its severity can range from mild emotional distress to severe functional impairment. This article will start fromEmotional expressions, behavioral changes, physical symptomsIt unfolds on three levels to help readers identify signs of depression and provide scientific coping suggestions. It is worth noting that depressive symptoms need to be diagnosed by a professional doctor to avoid self-labeling.
Emotional manifestations: Persistent depression and helplessness

The most striking feature of depression ischronically depressed mood, patients may feel empty, hopeless, or lose interest in daily activities. For example, hobbies that you were originally passionate about become boring, and it is difficult to experience happiness even when getting along with relatives and friends. Some people will be accompanied by strongFeelings of self-blame or uselessness, such as repeatedly thinking negative thoughts such as "I am worthless". American psychologist Martin Seligman pointed out in the theory of "learned helplessness" that this emotional state may be related to cognitive distortions under long-term stress. If symptoms persist for more than two weeks, it is recommended to seek psychological evaluation.
Behavioral changes: social withdrawal and loss of motivation
Emotional problems often manifest themselves as behavioral changes. patient mayavoid social activities, gradually isolate oneself; or obvioussluggish, simple tasks such as getting up and washing up become difficult. Some people, especially teenagers, exhibit irritable or impulsive behavior. According to data from the World Health Organization (WHO), about 5% of adults worldwide suffer from depression, and behavioral withdrawal is one of the main causes of medical treatment. Families can detect problems early by observing changes in their daily habits, such as a lack of personal hygiene.
Physiological symptoms: abnormal fluctuations in sleep and appetite
Depression is not just a psychological problem, it often causessomatization symptoms. About 80% of patients have sleep disorders, manifested by early awakening or excessive sleepiness; appetite may increase or decrease significantly, leading to sudden weight changes. In addition, unexplained headaches and digestive problems are also common. Harvard Medical School research points out that this is related to an imbalance of neurotransmitters (such as serotonin) in the brain. Commonly used clinical antidepressants such asFluoxetine (Prozac)(Produced by Eli Lilly and Company),Sertraline (Zoloft)(produced by Pfizer) and others can relieve symptoms by regulating transmitters, but they must be used strictly in accordance with the doctor's instructions.
Recognition and response: scientific intervention is key
The symptoms of depression are complex and diverse, butearly identificationCan significantly improve prognosis. In addition to professional treatment, regular exercise and social support also play a supporting role. It should be noted that the online self-assessment scale cannot replace diagnosis. If symptoms affect your life, you should go to a psychiatric or psychological clinic in time. Remember, depression is like a "soul cold" and it is treatable. As the psychologist Viktor Frankl said: “We always have a choice between stimulus and response.”
Quote sources:
1. World Health Organization (WHO) Global Mental Health Report 2023
2. Martin Seligman "Theory of Learned Helplessness" (American Psychological Association)
3. Harvard Medical School "Neurobiological Mechanisms of Depression" (2021)
4. Drug information: Fluoxetine (Eli Lilly), Sertraline (Pfizer)
| Common antidepressants | Manufacturer |
|---|---|
| Fluoxetine (Prozac) | Eli Lilly and Company |
| Sertraline (Zoloft) | Pfizer |
| Venlafaxine (Effexor) | Wyeth Pharmaceuticals |
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