Clinically reviewed by: Shaheen Ali, MD — psychiatrist specializing in mood disorders, women’s mental health, and psychodynamic psychotherapy, supporting patients through accessible, stigma-free, whole-person care. 

Many of us can picture her. She’s been coming in for a few years, her scores always in the mild range. She apologizes for taking up the appointment, and visits often end with a version of “I’m fine, just tired.” Eventually, she mentions that she thinks she has “high-functioning depression.”

A 2025 case report published in Cureus followed a 48-year-old woman through twelve years of shifting diagnoses, repeated medication trials, and a full course of dialectical behavior therapy, none of which moved her much. When someone finally laid out her history end to end, the picture was a continuous low mood with no recovery lasting beyond two months.

Her working life had held together the whole way through. The authors point to three reasons the diagnosis stayed hidden. Her ability to function disguised how severe things were, her ups and downs were read as separate episodes, and her emotional sensitivity was filed under personality.¹

Twelve years in a sequence where every individual decision looked reasonable at the time.

What Patients Mean by High-Functioning Depression

This colloquial term doesn’t appear in the DSM-5, instead emerging among patients discussing symptoms online in communities across TikTok and Reddit.

A 2025 study interviewed 120 adults who identify with the term and described the experience as depressive symptoms alongside continued functioning and hidden distress. The authors hypothesize that people who fit this description may go undiagnosed because their difficulties aren’t obvious to others and they don’t openly discuss their symptoms.²

When a patient uses the phrase, they’re telling you why they don’t think their symptoms count as depression. They’ve compared their experience with an image of someone withdrawing from everyday life and responsibilities. Because they kept going, they conclude that whatever they’re experiencing must fall short of the “real” thing.

The DSM-5 describes a pattern in persistent depressive disorder from the other direction. It notes that when symptoms become part of a person’s everyday life, especially when they begin early, patients may not think to mention them unless someone asks directly. The manual even gives an example of what they tend to say: “I’ve always been this way.”³

Anyone who has heard that and moved on is in good company. It sounds like temperament. It can also be a clue to persistent depressive disorder.

Persistent Depressive Disorder vs. Major Depressive Disorder

“High-functioning depression” isn’t a DSM-5 diagnosis, so once a patient uses the term, the clinical question is what diagnosis, if any, best describes what they’re experiencing.

Persistent depressive disorder and major depressive disorder are particularly relevant because depression can coexist with continued functioning in both. It may be chronic and woven into the patient’s baseline, or it may come in distinct episodes without bringing their life to a halt.

To refresh, the DSM-5 merged dysthymic disorder and chronic major depressive disorder into one category, persistent depressive disorder, defined by depressed mood present most of the day, more days than not, for at least two years in adults and one year in children and adolescents. Any symptom-free stretch within that window must last fewer than two months.^{4, 5}

On paper, PDD and MDD diagnoses sit together comfortably.

Persistent depressive disorder⁴

Major depressive disorder, mild to moderate⁵

How long it has to last

2 years in adults, 1 year in youth

2 weeks

Shape over time

Continuous low mood that rises and falls

Separate episodes with a beginning and an end

Symptom-free stretches

Under 2 months across the whole window

Full recovery between episodes

What the patient reports

Difficulty pinpointing a time they felt well

A change from their usual self

From the patient’s perspective, the conversation is more about whether what they’re experiencing is depression at all. They’re struggling, but their ability to keep working, parenting, socializing, and meeting their obligations doesn’t look like the depression they have in mind, whether that’s PDD, MDD, or something else. Sometimes, all they can articulate is an unshakeable feeling that something is wrong.

They may also feel guilty about being unhappy despite appearing successful and productive. The question they bring to the appointment may be less “What kind of depression is this?” than “Can I really be depressed if I’m still functioning?”

If a patient is using functioning to judge whether their symptoms are severe enough to count, they may minimize or leave out symptoms without realizing it. This can adversely affect how they respond to screenings like the PHQ-9.⁶

If they perk up when they hear the term “high-functioning depression,” or come in using it themselves, that can be an opening to probe further.

Navigating High-Functioning Depression in Practice

Five questions can help interrogate what a mild symptom picture is hiding. Each one is aimed at the course of the illness rather than its current intensity.

When did you first start feeling this way? An answer that reaches back to adolescence suggests symptoms that have had time to feel like personality. The DSM notes that persistent depressive disorder often goes unmentioned for this reason.

When was the last time you felt well? Persistent depressive disorder produces ups and downs without a sustained return to baseline. A patient who cannot name a good stretch longer than two months is describing the central criterion.

Was there a period when things changed noticeably from your usual self? A major depressive episode is a distinct two-week change from previous functioning that causes significant distress or impairment. A clear before and after points toward an episode.

What happened afterward? A full return to baseline suggests an episodic course. Improvement that stopped short of feeling well suggests persistent depressive disorder, possibly with an episode layered on top of it.

What has functioning cost you? Patients tend to answer this one concretely, describing feeling isolated, routine tasks that now take twice as much effort, or barely clocking important milestones with loved ones. Distress on its own satisfies the DSM impairment criterion, so a patient who has protected their work or relationship performance can still meet it.

Treating High-Functioning Depression When It’s Persistent

Persistent depression changes the treatment conversation because the patient may not know what “better” is supposed to feel like. After years of functioning with low mood, improvement can be gradual enough that both patient and clinician mistake progress for failure.

That makes expectations part of persistent depressive disorder treatment itself. In a meta-analysis of psychotherapy for chronic major depression and dysthymia, the full effect of treatment emerged around 18 sessions.⁷ A patient expecting to feel substantially different within six weeks may disengage just as meaningful change is beginning.

There’s also a strong case for thinking beyond a single modality. Across 101 randomized trials, combined psychotherapy and medication produced better response rates than either approach alone, including in chronic and treatment-resistant depression.⁸ For a patient who has spent years only trying one approach at a time, a useful question might be “What have you tried in a vacuum vs. what can we try together?”

That distinction becomes especially important when the chart appears to tell a story of treatment resistance. A decade of mild symptoms can leave behind a list of medication trials, but treatment resistance generally requires two or more antidepressant trials at an adequate dose and duration, with adherence established.⁹

Short or inadequately dosed trials can create the appearance of resistance when the more accurate issue is undertreatment.¹⁰ With persistent depression, it’s also worth considering that the medications may have successfully treated discrete episodes without ever changing the patient’s chronically depressed baseline.

Double Depression Treatment and Recovery Goals

A patient with persistent depression can also have a major depressive episode layered on top of their chronic symptoms, historically called “double depression.”⁴ The acute episode may be obvious because the patient is suddenly much worse, but the more important question comes after it lifts. Do they return to a healthy baseline or the depressed one they learned to live with?

If the acute episode resolves but the patient returns to the same chronically dysphoric baseline, the episode has improved, but the patient may not be well. Establishing that baseline before treatment gives clinicians something more meaningful to measure afterward. The goal isn’t to bring the patient back to their usual level of functioning, but to determine whether that “usual” was their best achievable state.

A Note on Safety When Functioning Looks Intact

As you work toward finding the right dysthymia treatment course, the patient who is still meeting expectations can be easy to read as lower risk, particularly when they seem composed. But the same identity that has helped them keep functioning may make it harder to tell someone how bad things have become.

For a patient who has spent years being the person who handles things, admitting to suicidal thoughts may feel like admitting that they are no longer managing. They may underestimate what they’re experiencing, qualify it, or leave it out altogether.¹¹

When Patients Bring New Mental Health Language to Care

Broader cultural conversations about mental health have given people more ways to compare experiences, recognize patterns, and find language for symptoms they may never have known how to describe. That can create confusion when informal terms begin to stand in for clinical diagnoses, but it can also give patients a way to finally articulate something they’ve struggled to explain.

When a patient brings a term like “high-functioning depression” to session, it’s a gift — clinicians can now help translate that language into a clearer picture of what they’re experiencing.

For someone who has spent years without a way to explain this, that translation can be the start of a diagnosis that fits and treatment that works.

Rivia Mind clinicians are trained to conduct comprehensive psychiatric evaluations and deliver ongoing, evidence-based mental health care for adults. To refer a patient or learn more about our clinical approach, call (929) 295-4879 or email info@riviamind.com.

References: 

1. Hegazi, T., Jamir, J., Hegazi, A., & Elhassan, Y. (2025). Mislabeling Chronic Depression: A Case Report of Persistent Depressive Disorder Misdiagnosed for 12 Years. Cureus, 17(11), e97835. https://doi.org/10.7759/cureus.97835
2. Joseph J F, Tural U, Joseph N D, et al. (February 12, 2025). Understanding High-Functioning Depression in Adults. Cureus 17(2): e78891. doi:10.7759/cureus.78891
3. Parker, G., & Malhi, G. S. (2019). Persistent Depression: Should Such a DSM-5 Diagnostic Category Persist?. Canadian journal of psychiatry. Revue canadienne de psychiatrie, 64(3), 177–179. https://doi.org/10.1177/0706743718814429
4. Patel RK, Aslam SP, Rose GM. Persistent Depressive Disorder. In: StatPearls. StatPearls Publishing; updated 2024. https://www.ncbi.nlm.nih.gov/books/NBK541052/
5. Cleveland Clinic. Clinical Depression (Major Depressive Disorder).
6. Zuithoff, N. P., Vergouwe, Y., King, M., Nazareth, I., van Wezep, M. J., Moons, K. G., & Geerlings, M. I. (2010). The Patient Health Questionnaire-9 for detection of major depressive disorder in primary care: consequences of current thresholds in a cross-sectional study. BMC Family Practice, 11, 98. https://doi.org/10.1186/1471-2296-11-98
7. Cuijpers, P., van Straten, A., Schuurmans, J., van Oppen, P., Hollon, S. D., & Andersson, G. (2010). Psychotherapy for chronic major depression and dysthymia: A meta-analysis. Clinical Psychology Review, 30(1), 51–62. https://doi.org/10.1016/j.cpr.2009.09.003
8. Cuijpers, P., Noma, H., Karyotaki, E., Vinkers, C. H., Cipriani, A., & Furukawa, T. A. (2020). A network meta-analysis of the effects of psychotherapies, pharmacotherapies and their combination in the treatment of adult depression. World Psychiatry, 19(1), 92–107. https://doi.org/10.1002/wps.20701
9. Gaddey, H. L., Mason, B., & Naik, A. (2024). Depression: Managing resistance and partial response to treatment. American Family Physician, 109(5), 410–416.
10. Sackeim, H. A. (2001). The definition and meaning of treatment-resistant depression. Journal of Clinical Psychiatry, 62(Suppl 16), 10–17.
11. Hallford DJ, Rusanov D, Winestone B, Kaplan R, Fuller-Tyszkiewicz M, Melvin G. Disclosure of suicidal ideation and behaviours: A systematic review and meta-analysis of prevalence. Clin Psychol Rev. 2023 Apr;101:102272. doi: 10.1016/j.cpr.2023.102272. Epub 2023 Mar 26. PMID: 37001469.