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Tolerance to phenelzine and subsequent refractory depression: three cases
1Department of Psychiatry, St. Elizabeth's Hospital, Boston, MA 02135.
The Journal of Clinical Psychiatry
|January 1, 1989
Summary
Phenelzine initially improved major depression with dysthymia in three patients. However, long-term use led to severe, treatment-resistant depression, suggesting potential adverse effects of phenelzine.
Area of Science:
- Psychiatry
- Pharmacology
Background:
- Major depressive disorder (MDD) often co-occurs with persistent depressive disorder (dysthymia).
- Monoamine oxidase inhibitors (MAOIs) like phenelzine are used for treatment-resistant depression.
Observation:
- Three patients with MDD and dysthymia received phenelzine treatment.
- An initial positive response to phenelzine was observed in all patients.
Findings:
- All patients subsequently relapsed, developing severe chronic depression.
- This depression became refractory to subsequent treatments, including phenelzine.
Implications:
- Long-term phenelzine treatment may have detrimental effects on some patients with depression.
- Further research is needed to understand the risks and benefits of chronic MAOI use.
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