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News
When depression won't respond to treatment and the ability to feel pleasure disappears persistently, the danger spikes. A new study finds that patients with treatment-resistant depression (TRD) who experience chronic anhedonia are nearly 4 times more likely to attempt suicide than those with past or short-term anhedonia. Clinicians are being urged to screen for both the presence and persistence of these symptoms.
For patients already battling treatment-resistant depression (TRD), a new study reveals a critical warning sign: chronic anhedonia. Researchers found that TRD patients who persistently cannot experience pleasure — both historically and in the present — face dramatically higher rates of suicidal ideation and suicide attempts compared to those whose anhedonia is past or short-lived.
The retrospective cohort study, published in The Journal of Clinical Psychiatry, analyzed 160 participants from a Toronto mood and anxiety clinic, 97 of whom met criteria for TRD. Anhedonia was categorized as past, acute, or chronic, and suicidality was assessed using a standardized psychiatric interview tool.
Why it matters: Clinicians treating TRD patients may be underestimating suicide risk by focusing only on whether anhedonia is present — not how long it has persisted. The authors note that just two simple screening questions from a standard psychiatric tool can flag this elevated risk, making early identification both practical and potentially life-saving.
