Chronic low mood may be persistent depressive disorder, previously called dysthymia, but duration alone cannot establish the diagnosis. If feeling low has become your usual background, the useful next step is to describe its history and effect on everyday life to a health care professional. You do not need to wait until you stop functioning to ask for help.
Get urgent help if you cannot stay safe. If you might act on thoughts of suicide or self-harm, contact local emergency services or go to an emergency department now. In the United States, call or text 988 for crisis support; outside the United States, use your local crisis service. Ask someone you trust to stay with you while you seek help.
When low mood starts to feel like your normal self
A long-running pattern can be difficult to explain because there may be no obvious starting point. Instead of saying only “I have always been this way,” describe a typical week: how much effort work takes, what you avoid after work, and whether you still enjoy time with other people. Those examples give a clinician something clearer to discuss than a personality label.
MedlinePlus describes persistent depressive disorder as low mood on most days for at least two years in adults, with additional symptoms; the duration is at least one year in children and teenagers, whose mood may be irritable. These timeframes belong to a clinical assessment. They are not instructions to postpone care, and they do not turn a calendar into a diagnostic test.
An appointment note can start with an approximate anchor such as “before I changed jobs” or “during my final school year.” Add what you remember about better stretches and any more difficult periods. Mark uncertain details as uncertain; a clear account does not need to be a perfect one.
- Beginning: When did the pattern become noticeable, even approximately?
- Course: Were there periods when mood felt closer to your usual well self?
- Recent change: Has sleep, appetite, energy, or day-to-day functioning changed?
- Impact: What now takes more effort or has become difficult to maintain?
What the terms tell you – and what they leave out
“Chronic depression” describes a long course, while persistent depressive disorder is a specific diagnostic term. A major depressive episode can also occur within a longer history of low mood. The label matters for care, but your account should first make the course understandable rather than try to choose the diagnosis in advance.
The NIMH depression overview distinguishes persistent depressive disorder from major depression, which usually involves symptoms for at least two weeks. Major depression can also recur or persist. Neither a short difficult period nor years of low mood can be interpreted properly without the wider history.
For example, “low for several years, with a sharp worsening this month” describes two useful observations. “It is just mild depression” hides the recent change and says little about daily impact. Bring both the long-running background and the current change into the conversation, even if you do not know how they fit together.
Keep “felt better” and “felt like my usual well self” separate in your notes when that distinction is meaningful to you. Describe what returned during the better period, such as enjoying a conversation or managing ordinary decisions. This gives the clinician context without asking you to judge whether a formal remission occurred.
Also separate when the pattern began from when you first sought help. You may have noticed low mood long before discussing it with anyone. If an earlier appointment focused only on a recent difficult week, bring the longer history to the next conversation.
A brief symptom form records what you report within its stated timeframe. It cannot replace the account of earlier years, changing circumstances, and previous care. If a form feels too narrow for your experience, add a short explanation instead of trying to force the whole history into its answers.
Life events can be useful memory anchors without proving a cause. “I remember struggling after a move” says when you noticed a problem; “the move caused everything” makes a stronger claim. Bring the observation first and discuss possible explanations during assessment.
A comparison can organize the terminology without deciding which condition applies to you. Read the duration column as orientation, and the final column as the question that still needs assessment. If your symptoms do not fit neatly, describe them anyway.
| Pattern | Typical time context | What still needs assessment |
|---|---|---|
| Persistent depressive disorder | At least two years in adults; one year in children and teens. | Symptoms, continuity, daily impact, and other explanations. |
| Major depressive episode | At least two weeks, with the required symptom pattern. | Severity, functioning, previous episodes, and the wider mood history. |
| Everyday sadness or stress | Duration varies with circumstances. | Whether distress persists, worsens, or interferes with daily life. |
Functioning is more than showing up
Someone may arrive at work on time and still spend the evening exhausted, withdrawn, or unable to make ordinary decisions. Describe the cost of maintaining responsibilities as well as the responsibilities themselves. An appointment note is more useful when it includes a concrete example, such as meals becoming irregular or social invitations repeatedly being declined.
MedlinePlus lists accompanying features including low energy, sleep or appetite changes, low self-esteem, hopelessness, and poor concentration. You do not need to tick every feature to explain why you are concerned. A clinician interprets the pattern; your job is to report what you have noticed without minimizing it or making it fit a checklist.
If tracking becomes burdensome, reduce the task to a brief note when something changes. “Stayed at work, but missed dinner and cancelled a visit” is a usable observation. Repeatedly grading yourself against an invented wellness score adds work without explaining your experience any better.
What else belongs in the assessment?
A depression assessment may include questions about physical illness, medicines, substances, and other mental health symptoms. NIMH notes that some conditions, including thyroid disorders, can produce similar symptoms. Testing is chosen from the history and examination; there is no single blood test that confirms persistent depressive disorder.
Tell the clinician about any distinct period when you needed much less sleep yet felt unusually energized or active. The NIMH bipolar disorder guide explains why lifetime changes in mood, energy, and behavior matter to diagnosis. A good day or one sleepless night is not enough to establish hypomania, but an unusual sustained change deserves discussion.
Bring that information even if you are seeking help mainly for low mood today. Our guide to depression, anxiety, or bipolar disorder explains the broad differences. Reading can help you describe the question, while the assessment determines what it means for you.
Prepare a short account for your appointment
The NIMH appointment guidance recommends preparing questions and a medication list ahead of time. Include prescribed medicines, nonprescription products, and supplements, as well as relevant family history and recent stressors. If you want support, consider asking someone you trust to attend or help you remember the discussion.
- Write one example of how low mood affects your day.
- List medicines and supplements, with any recent changes.
- Note previous treatment and what helped or was difficult.
- Choose your main question, such as “What should we assess first?”
- Ask how follow-up will work and whom to contact if things worsen.
Mood History Clarity below turns a few observations into a compact appointment note. It does not calculate a score, assess your risk, or identify a disorder. Choose “Not sure” when needed, and avoid identifying details; the experience itself does not save or send your entries.
Mood History Clarity
Organize the pattern and daily impact into a short note for your appointment.
Preparation, not diagnosis. This experience cannot identify a disorder, assess safety, or recommend treatment. Children and teens should seek age-appropriate professional support.
This experience keeps entries in this page only and does not save or send them. Avoid names and identifying details. Your browser, extensions, or the surrounding website may have their own data practices.
Interactive actions have not loaded yet. You can still prepare a note on paper: record onset, better periods, daily impact, recent changes, and questions. If actions stay unavailable, reload this page.
Your appointment note
A useful next step
Arrange an appointment with a primary care or mental health professional. Bring this note and a complete medication list. If symptoms worsen, seek help sooner; no answer here establishes safety.
Read about depression, anxiety, or bipolar disorderCopying or printing makes a separate copy. Keep it somewhere appropriate for personal health information.
Treatment should include a way to review progress
Depression care may involve psychotherapy, medication, or both, selected with a health care professional. Ask what the proposed treatment is intended to change and how its benefits and side effects will be reviewed. Do not start, stop, or alter medication based on this article or the appointment note.
For chronic depressive symptoms, NICE discusses evidence for psychological therapy and antidepressant options, while noting limits in the evidence for some combinations. There is no universal best treatment for every person. If progress is limited, arrange a review of the approach rather than interpreting it as proof that improvement is impossible.
Use the review visit to describe what changed in daily life, not only whether you feel “better.” For instance, you might ask whether returning to regular meals and reconnecting with a friend are useful goals alongside mood symptoms. Agree on goals with your clinician and keep them manageable enough to revisit.
Frequently asked questions
Is dysthymia the same as persistent depressive disorder?
Dysthymia is the older term commonly used for persistent depressive disorder. “Chronic depression” is broader wording and does not establish a specific diagnosis. A clinician considers symptoms and their course before choosing the appropriate term.
Should I wait two years before asking for help?
No. The duration used in diagnosis is not a waiting period for care. If low mood is persistent, worsening, or affecting daily life, discuss it with a health care professional now.
Can I have chronic low mood and still work?
Continuing to work does not explain how much effort the day requires or what happens afterwards. Describe the impact on sleep, meals, relationships, and time outside work. Concrete examples help make your concern understandable.
Will Mood History Clarity tell me whether I have PDD?
No. It organizes your own observations into a note for an appointment. It gives no diagnosis, risk score, treatment selection, or reassurance about safety.
A clear description is enough to begin
You do not need the right label before making an appointment. Start with what has changed, how long you remember it lasting, and one example of its effect on your day. The next useful decision is how to obtain an assessment and follow-up, rather than whether your experience is serious enough to deserve attention.
