Understanding persistent depression (dysthymia)

Persistent depressive disorder — also known as dysthymia — is a long-lasting form of depression. The low mood is usually less intense than in major depression, but it lasts far longer: by definition, present most of the day, more days than not, for two years or more in adults. Because it is so persistent, it can start to feel less like an illness and more like simply the way you are.

Where major depression tends to arrive as a distinct episode — a clear change from how you usually feel — dysthymia works differently. It is a low, grey background hum that has been there so long you may struggle to remember feeling any other way. You still function. You get on with things. But a sense of heaviness, flatness or joylessness follows you through it all.

That long duration is exactly what makes dysthymia so easy to miss. Without a clear before and after, there is often no obvious moment that says “something has changed, I should get help.” Instead, the low mood quietly becomes part of the furniture — and part of how you see yourself. Naming it as a recognised, treatable condition, rather than a fixed personality trait, is often the beginning of things shifting.

The symptoms of persistent depressive disorder are similar to those of depression more broadly, but their defining feature is how long they have been present. Most people experience a cluster of these, lasting most of the day, more days than not, over a long period.

Common signs include:

• A persistent low mood or sense of sadness that rarely fully lifts
• Low energy and fatigue, even when you have rested
• Low self-esteem, or a long-held sense of not being good enough
• Difficulty concentrating or making decisions
• Changes in sleep and appetite, in either direction
• A general sense of hopelessness, or that things simply will not improve

What sets dysthymia apart is not any single symptom but the way these have quietly persisted, often since adolescence or early adulthood. Many people are surprised to learn that what they had assumed was just their temperament fits a recognised pattern — one that can be understood and supported rather than simply endured.

It is easy to assume that something you have lived with for years is beyond changing — but persistent depressive disorder is treatable, and many people find that support helps them feel noticeably different from how they have felt for a very long time. The length of time you have carried it does not put it out of reach.

Talking therapy can help you understand the patterns that have kept the low mood in place, question the long-held beliefs that have come to feel like facts about you, and gradually reconnect with a sense of possibility. CBT can be useful for working with entrenched negative thinking, while open-ended counselling offers space to explore how the low mood took root and what sustains it. Your GP can also advise on other support that may help alongside therapy. Our depression counselling service explains how we work and how to begin, and our depression overview covers the wider picture. Sessions start from £65; see our fees page for details.

Sessions are confidential. There are limited circumstances where confidentiality may need to change — for example, if there is a serious risk of harm to you or someone else — and your therapist will explain these clearly, in advance, before you begin.

A printable overview of our depression counselling service — useful to keep or share.