Clinical Vignette
Patient: "Mrs. L," 58-year-old retired nurse, referred by her primary care physician after 3 months of severe depression unresponsive to sertraline 150mg.
Chief Concern: "I feel nothing. Absolutely nothing. My grandchildren visit and I feel nothing. I wake up at 4 AM every morning and just lie there. I can't eat. I've lost 15 pounds."
History of Present Illness: Mrs. L experienced onset of depressive symptoms 3 months ago without an identifiable precipitant. The depression developed over approximately 1 week, which she characterizes as a 'switch' from normal functioning to profound incapacity. She reports pervasive anhedonia: activities that previously brought pleasure (gardening, cooking, grandchildren) produce 'absolutely no feeling.' She describes her mood as qualitatively different from normal sadness: 'This isn't being sad. It's being empty, like being dead inside.' She wakes at 4 AM daily (terminal insomnia) and reports that mornings are the worst part of her day, with gradual improvement by evening. She has lost 15 pounds in 3 months without dieting (appetite is absent). She moves slowly, speaks slowly, and reports difficulty initiating any activity. She has been on sertraline 150mg for 8 weeks without improvement. She has one prior depressive episode at age 42 with similar features that responded to a tricyclic antidepressant (nortriptyline).
Past Psychiatric History: One prior MDE (age 42), similar presentation, responded to nortriptyline. No history of mania or hypomania.
Family History: Mother had recurrent major depression. Father: no psychiatric history.
Mental Status Exam: Psychomotor retardation marked: slow gait, delayed verbal responses (3-5 second latency), minimal spontaneous movement. Appears older than stated age. Weight loss evident. Speech slow, monotone, low volume. Mood 'empty.' Affect flat, unreactive (no response to examiner's attempts at engagement). No psychotic symptoms. Passive suicidal ideation ('I wouldn't mind not waking up') without plan or intent. Cognition grossly intact.
Step 1: Confirming Major Depressive Episode
(1) Depressed mood most of the day, nearly every day
Persistent empty, 'dead inside' quality of mood for 3 months. Worst in mornings with gradual improvement by evening. PRESENT.
(2) Markedly diminished interest or pleasure in all activities
Pervasive anhedonia. Unable to experience pleasure from previously enjoyed activities (grandchildren, gardening, cooking). Describes total absence of positive emotional response. PRESENT.
(3) Significant weight loss
15-pound weight loss in 3 months without dieting. Appetite absent. PRESENT.
(4) Insomnia or hypersomnia
Terminal insomnia: waking at 4 AM daily with inability to return to sleep. PRESENT.
(5) Psychomotor retardation observable by others
Marked psychomotor retardation: slow gait, delayed verbal responses (3-5 sec latency), minimal spontaneous movement. Observable by examiner. PRESENT.
(6) Fatigue or loss of energy
Reports inability to initiate activities. Inferred from psychomotor retardation. PRESENT.
(7) Feelings of worthlessness or guilt
Reports feeling 'useless' and guilty about burden on family. PRESENT.
(8) Diminished ability to concentrate
Reports difficulty focusing. Unable to read more than a paragraph. PRESENT.
(9) Recurrent thoughts of death
Passive suicidal ideation without plan or intent. PRESENT.
MDE confirmed: 9/9 symptoms present for 3 months.
Far exceeds the 5-symptom/2-week threshold. MDE CONFIRMED.
Step 2: Applying the Melancholic Features Specifier
DSM-5-TR requires at least one of: (A1) loss of pleasure in all or almost all activities, or (A2) lack of reactivity to usually pleasurable stimuli. Plus three or more of: (B1) distinct quality of depressed mood, (B2) depression regularly worse in the morning, (B3) early-morning awakening, (B4) marked psychomotor retardation or agitation, (B5) significant anorexia or weight loss, (B6) excessive or inappropriate guilt.
A1: Loss of pleasure in all activities
Pervasive anhedonia across all domains. PRESENT.
A2: Lack of reactivity to usually pleasurable stimuli
Grandchildren's visit produces no emotional response. Nothing temporarily improves her mood. PRESENT.
B1: Distinct quality of depressed mood
'This isn't being sad. It's being empty, like being dead inside.' Qualitatively different from normal grief or sadness. PRESENT.
B2: Depression regularly worse in morning
Reports mornings as worst, gradual improvement by evening (diurnal variation). PRESENT.
B3: Early-morning awakening
Wakes at 4 AM daily (terminal insomnia), at least 2 hours before usual time. PRESENT.
B4: Marked psychomotor retardation or agitation
Marked psychomotor retardation: slow gait, delayed responses, minimal movement. PRESENT.
B5: Significant anorexia or weight loss
15 pounds lost in 3 months. Appetite absent. PRESENT.
B6: Excessive or inappropriate guilt
Guilt about being a burden to family. PRESENT.
Summary: A criteria (2/2 met) + B criteria (6/6 met).
All melancholic criteria present. MELANCHOLIC FEATURES SPECIFIER CONFIRMED.
Diagnostic Formulation
Diagnostic Conclusion
Major Depressive Disorder, Recurrent, Severe, with Melancholic Features (F33.2): Recurrent MDD (prior episode at age 42). Current episode severe (9/9 criteria, passive SI, marked functional impairment). Full melancholic features specifier (2/2 A criteria, 6/6 B criteria). Prior response to nortriptyline (TCA) supports melancholic subtype identification. SSRI non-response (sertraline) is consistent with literature suggesting melancholic depression responds preferentially to TCAs, SNRIs, or ECT over SSRIs.
Teaching Points
- The melancholic features specifier identifies a biological subtype of depression characterized by profound anhedonia and neurovegetative features (psychomotor disturbance, diurnal variation, terminal insomnia, appetite loss). This subtype has treatment implications: it may respond preferentially to tricyclic antidepressants, SNRIs, and electroconvulsive therapy over SSRIs.
- Distinct quality of depressed mood (Criterion B1) is a phenomenological feature unique to melancholic depression. Patients describe it as qualitatively different from grief or normal sadness: 'empty,' 'dead,' 'numb.' This subjective report is diagnostically significant.
- Diurnal variation (worse in morning, improving by evening) reflects circadian rhythm dysfunction characteristic of melancholic depression. This pattern contrasts with reactive depression, where mood fluctuates based on external events.
- Mrs. L's prior response to nortriptyline (a TCA) is clinically informative. Given her melancholic subtype and SSRI non-response, switching to a TCA (nortriptyline or imipramine), an SNRI (venlafaxine or duloxetine), or considering ECT would be evidence-informed next steps.
- The melancholic features specifier is distinct from the atypical features specifier, which describes the opposite pattern: mood reactivity (mood improves with positive events), hypersomnia, increased appetite, leaden paralysis, and interpersonal rejection sensitivity.