In short
Depression is an illness, not just a bad mood: doctors speak of depression when low mood or loss of interest and pleasure has persisted almost every day for at least two weeks, accompanied by other symptoms such as lack of energy, disturbed sleep and appetite, difficulty concentrating, feelings of guilt and worthlessness, and thoughts of death. The blues usually have a specific cause, last for days, and lift when something good happens. With depression, joy does not return even after pleasant events, and the condition interferes with work and relationships. Depression responds well to treatment with psychotherapy and, when needed, medication.
Key points in one minute
- The key signs of depression are persistent low mood, loss of interest and pleasure, and reduced energy lasting longer than two weeks.
- The blues pass within days and ease with pleasant events, while depression lasts for weeks and does not respond to good things.
- Depression can show up as irritability, physical aches, insomnia, and fatigue without obvious sadness.
- Alcohol makes depression worse: temporary relief gives way to worsening mood, sleep, and anxiety.
- Thoughts of death are a reason to seek help immediately, without waiting for them to grow stronger.
The Core Signs of Depression
ICD-10 lists three core symptoms for a diagnosis of “depressive episode”: persistently low mood, loss of interest and of the ability to enjoy things (anhedonia), and reduced energy with increased fatigue. ICD-11 and DSM-5 follow similar logic: at least one of two symptoms must be present (low mood or loss of interest), and together with other symptoms it must last most of the day, nearly every day, for at least two weeks.
The key word is persistence. Everyone has bad moods, but in depression the low mood is like a gray filter through which the whole of life is seen. A person may understand that objectively things are not that bad, yet not feel it. Interest disappears in things that used to bring joy: hobbies, socializing, food, sex. Every task takes enormous effort; even taking a shower or making a phone call can feel like an impossible job.
Additional Symptoms
The core signs are joined by reduced concentration and attention, low self-esteem and self-confidence, ideas of guilt and self-blame, a bleak and pessimistic view of the future, thoughts of death or self-harm, disturbed sleep (most often early waking, less often excessive sleepiness), and changes in appetite and weight. The more symptoms there are and the stronger they are, the more severe the episode.
Levels of Severity
Doctors distinguish between mild, moderate, and severe depressive episodes. With a mild episode, the person copes with work and daily life, though with difficulty. With a moderate episode, this is already very hard. With a severe episode, it is almost impossible; suicidal thoughts are often present, and sometimes psychotic symptoms too, such as delusions of guilt or ruin. The severity is determined by a doctor during an examination.
How Depression Differs From a Bad Mood or the Blues
The blues are the mind’s natural reaction to fatigue, setbacks, or a change of season. They usually have an understandable cause, last from a few hours to a few days, and fade as circumstances change: a weekend, meeting up with friends, a piece of good news. A person with the blues may feel sad but keeps the ability to enjoy things, make plans, and generally get things done.
With depression, the link to a cause weakens or is absent altogether: everything seems fine, yet there is emptiness inside. Pleasant events do not help and sometimes even intensify the guilt (“I have everything, and yet I can’t be happy”). There is a sense that it will always be this way. Sleep, appetite, ability to work, and relationships all suffer. If this state lasts two weeks or longer, it is a reason to consult a specialist, not to “pull yourself together.”
| Feature | The blues, a bad mood | Depression |
|---|---|---|
| Duration | Hours or a few days | Two weeks or longer, almost every day |
| Link to a cause | A clear cause; passes once it is resolved | The cause is unclear, or the state is out of proportion to it |
| Response to good events | Mood improves | Joy does not return; sometimes guilt grows |
| Sleep and appetite | Usually no noticeable change | Early waking, insomnia or sleepiness, changes in appetite |
| Ability to function | Preserved | Noticeably reduced; even simple tasks take effort |
| Thoughts of death | No | May appear and require urgent help |
Hidden Signs of Depression That Are Often Missed
Depression does not always look like tears and sadness. In many people, especially men and teenagers, it shows up as irritability, outbursts of anger, cynicism, or withdrawal into work, video games, or alcohol. Instead of saying “I’m sad,” the person may say “everything annoys me” or “I’m just tired.” Family members see this as a bad temper, when in fact these are symptoms of an illness.
Depression is often disguised as physical complaints: headaches, back and stomach pain, heaviness in the chest, digestive problems, constant weakness. The person goes through tests with different doctors, the results come back normal, and yet their condition does not improve. This kind of depression is sometimes called masked or somatized depression. If physical complaints are combined with insomnia, apathy, and loss of interest, it is worth seeing a psychiatrist.
- Constant fatigue that does not go away after rest or a weekend
- Waking early at 4–5 a.m. with anxiety and being unable to fall back asleep
- Irritability, angry outbursts, and intolerance of small things
- Drinking more often “to relax” or to fall asleep
- Physical pain for which doctors find no cause
- Avoiding get-togethers, socializing, and activities once enjoyed
- Worsening memory and concentration; even simple decisions are hard to make
- Phrases like “everyone would be better off without me” or “what’s the point of it all”
Depression, Burnout, and Anxiety: What Is the Difference
In ICD-11, occupational burnout is described as a work-related phenomenon rather than a separate illness. Its core features are exhaustion, mental distance from one’s job, and reduced effectiveness. With burnout, a person comes back to life on vacation and outside the work context, whereas with depression the apathy extends to everything: rest, family, and hobbies. However, prolonged burnout often turns into depression, so the boundary can be blurred.
Anxiety disorders and depression often go together. In anxiety, the foreground is taken up by tension, worry about the future, expecting the worst, and physical symptoms (a racing heart, muscle tension). In depression, it is emptiness and a lack of energy and interest. Mixed states are very common, and this affects the choice of treatment: some antidepressants are also effective for anxiety, but they must be selected by a doctor.
Depression and Alcohol
Alcohol is a central nervous system depressant. It brings short-term relief but disrupts the structure of sleep, increases anxiety the next day, and over time deepens depression. In addition, the combination of alcohol and depression raises the risk of impulsive actions. If you notice that you drink to cope with your mood, it is important to discuss this with a psychiatrist or an addiction specialist.
Bipolar Depression
Sometimes depression is part of bipolar disorder, in which there are also periods of elevated mood. This matters because the treatment is different: antidepressants without mood stabilizers can trigger a manic episode. That is why the doctor will always ask whether you have previously had periods of unusual energy, sleeplessness without fatigue, or impulsive spending.
How Depression Is Diagnosed and Treated
The diagnosis is made by a psychiatrist based on a conversation and observation. Questionnaires such as depression rating scales help assess severity and track changes over time, but they do not replace the doctor. Physical causes that can produce similar symptoms must always be ruled out: thyroid problems, anemia, vitamin deficiencies, and side effects of medications. That is why the doctor may order blood tests and consultations with other specialists.
The treatment of depression depends on its severity. For mild depression, the main method is often psychotherapy, especially cognitive behavioral therapy, along with a regular sleep schedule, physical activity, and giving up alcohol. For moderate and severe depression, psychotherapy is usually combined with antidepressants. The effect of medication develops gradually over several weeks, and the course is continued for several months after improvement to reduce the risk of relapse. Medications must not be stopped on your own.
- A consultation with a psychiatrist and assessment of the severity of the condition
- Ruling out physical causes: lab tests and, if needed, consultations
- Psychotherapy: cognitive behavioral, interpersonal, and other evidence-based methods
- Antidepressants as prescribed by a doctor for moderate and severe depression
- Restoring a regular sleep schedule and physical activity, and giving up alcohol
- Regular follow-up and maintenance treatment to prevent relapse
How to Help Yourself or a Loved One With Depression
If you suspect you have depression, start with something simple: tell at least one person you trust how you are feeling, and book a consultation. Do not make major decisions such as quitting your job or getting divorced when you are at your lowest. Try to keep a basic routine: get up at the same time, go outside, and eat at least a little. This does not cure depression, but it helps keep it from getting worse while you look for help.
It is important for loved ones not to dismiss the person’s feelings (“others have it worse,” “pull yourself together”) and not to pressure them. It is better to say: “I can see you’re having a hard time. I’m here for you. Let’s find a doctor together.” You can help with booking an appointment, offer to go together, or take on some of the household tasks. At Narcology 24, an online consultation with a psychiatrist is available, which is convenient when it is hard for the person to leave home, and in severe cases the doctor can come to the home.
When to see a doctor
- Low mood or indifference has lasted two weeks or longer, almost every day
- You no longer enjoy the things that used to make you happy
- Disturbed sleep and appetite and constant fatigue interfere with work or studies
- You have started drinking or taking sleeping pills more often to cope with how you feel
- You have thoughts that you do not want to live or that everyone would be better off without you
- You have had depressive episodes before, and the symptoms are coming back now
When urgent help is needed
If suicidal thoughts appear, or the person is saying goodbye, giving away belongings, or saying they see no way out, urgent help is needed. Do not leave them alone, and call 103 or 112. The free helpline 150 is available for children and young people. Depression is treatable, and this state is temporary, even if it feels otherwise right now.
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Questions and answers
How can I tell if I have depression and not just fatigue?
Fatigue goes away after rest, a weekend, or a vacation. With depression, rest does not help, and the lack of energy is joined by persistent low mood, loss of interest, disturbed sleep and appetite, difficulty concentrating, and feelings of guilt. If this state lasts longer than two weeks and interferes with your life, it is worth seeing a psychiatrist for an assessment.
Can depression go away on its own?
A mild episode sometimes passes without treatment, but this can take months, and without help depression often comes back and becomes more severe. Treatment shortens the period of suffering and lowers the risk of relapse and complications, including alcohol misuse. So it is not a good idea to wait for it to pass on its own, especially if the symptoms are severe.
Which doctor treats depression?
A psychiatrist makes the diagnosis and prescribes treatment. A psychotherapist or clinical psychologist provides psychotherapy, which can be the main method for mild depression. A general practitioner or neurologist may suspect depression, but for an accurate diagnosis and selection of antidepressants it is better to see a psychiatrist.
Can depression be treated without pills?
For mild depression, psychotherapy, a healthy routine, physical activity, and giving up alcohol are often enough. For moderate and severe depression, combining psychotherapy with antidepressants is more effective than either method alone. The decision about whether medication is needed is made together with the doctor, taking into account the severity and your preferences.
Are antidepressants addictive?
Antidepressants are not addictive in the way alcohol or drugs are: there is no craving and no need to increase the dose to get the effect. However, stopping some medications abruptly can cause unpleasant symptoms, so they are tapered off gradually according to the doctor’s plan. You should never stop taking them on your own.
Are depression and alcohol linked?
Yes, very closely. Many people try to drown out depression with alcohol, but it makes the depression worse, disrupts sleep, and increases anxiety. In turn, regular drinking can itself cause depressive symptoms. If you notice this connection, at Narcology 24 a psychiatrist and an addiction specialist will consult you and offer a joint treatment plan.
Why is untreated depression dangerous?
Without treatment, depression can drag on for months and lead to job loss, broken relationships, the development of addictions, and worsening physical health. The most serious risk is suicidal thoughts and actions. Timely treatment allows most people to recover fully and return to normal life.
Sources and methodology
- ICD-10, categories F32–F33 “Depressive episode” and “Recurrent depressive disorder,” WHO
- ICD-11, Chapter 6, section “Mood disorders,” WHO
- DSM-5, American Psychiatric Association
- NICE guideline NG222 “Depression in adults: treatment and management”
- Clinical protocols for diagnosis and treatment, Ministry of Health of the Republic of Kazakhstan
- WHO guidance for media professionals on reporting suicide
This article was prepared by the Narcology 24 medical editorial team and reviewed by a doctor. It is for reference only and does not replace a specialist consultation. Editorial policy
Medically reviewed by
Zhanar Tulegenova, MDPsychiatrist and psychotherapist · experience 18 yearsDepression, anxiety and panic attacks, PTSD, OCD and insomnia; addiction psychotherapy and relapse prevention.
