Depression is primarily characterized by a depressed mood. If you experience at least four of the following symptoms for two weeks or longer, it is advisable to seek medical treatment.
Depressed Mood
This is the most prominent characteristic of depression. Mild cases involve low spirits, distress, sadness, and constant sighing; severe cases manifest as persistent low mood, pessimism, despair, and suicidal tendencies.
The severity of depressive mood varies, ranging from mild low spirits to profound sadness, pessimism, and hopelessness.Patients feel emotionally weighed down, find life meaningless, struggle to feel joy, and experience profound gloom. Days drag on interminably, filled with unbearable suffering and a sense of helplessness. Some may also exhibit anxiety, irritability, or restlessness.
Depressed mood persists for most of the day, nearly every day, as evidenced by both subjective reports (e.g., feelings of emptiness, helplessness, sadness) and observable signs (e.g., frequent crying).Patients often excessively devalue their abilities, viewing their present, past, and future with criticism, negativity, and denial. They find fault with everything, declaring themselves worthless and their future bleak. Intense self-blame, guilt, feelings of uselessness, worthlessness, and helplessness may arise. In severe cases, self-accusations, hypochondriacal ideas, or even choosing suicide as a form of self-punishment may occur.
Suicidal thoughts and behaviors represent the most dangerous aspect of depression. Individuals with severe depression often choose suicide as a means to escape their suffering.
Loss of interest is a common symptom among depressed patients. They lose interest in daily activities and fail to derive pleasure from entertainment or enjoyable pursuits.They fail to experience the joy of family life, disregard former hobbies, often seclude themselves indoors, distance themselves from friends and relatives, and avoid social interactions. Patients frequently report feeling "emotionally numb," "devoid of feelings," or "unable to feel happy."
Loss of energy and fatigue make even minor daily tasks like washing and dressing difficult and exhausting. They feel incapable of managing basic activities. Persistent fatigue occurs without apparent cause.Mild cases involve physical exhaustion and a sense of being overwhelmed, with diminished motivation in daily life and work; severe cases may even neglect eating, drinking, and personal hygiene. Patients often describe their state as "a mental breakdown" or "a deflated balloon."
Approximately 70%–80% of depression patients experience sleep disturbances. While falling asleep is usually not difficult, they often wake after a few hours, returning to a depressed mood. This early awakening—typically 2–3 hours earlier than usual—prevents further sleep, leaving them immersed in a sorrowful atmosphere. This pattern is termed early morning insomnia, middle-of-the-night awakening, and terminal insomnia.Those with anxiety disorders may experience difficulty falling asleep and frequent nightmares. A small number of depression patients exhibit excessive sleep, termed "hypersomnia depression."
Symptoms include reduced food intake and weight loss. Most patients experience loss of appetite and poor digestion, finding once-appealing foods unenticing. They may have no desire to eat or find meals tasteless, often accompanied by weight loss. However, a minority of patients may experience increased appetite.