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Antidepressants for neuropathic pain
1Cancer Center, Helsinki University Central Hospital, Haartmaninkatu 4, P O Box 180, Helsinki, Finland, FIN-00029. tiina.saarto@hus.fi
The Cochrane Database of Systematic Reviews
|July 22, 2005
Summary
Tricyclic antidepressants (TCAs), particularly amitriptyline, effectively treat neuropathic pain. Newer antidepressants like SSRIs show limited effectiveness, and more research is needed to determine optimal treatment strategies for various neuropathic pain conditions.
Area of Science:
- Neurology
- Pharmacology
- Pain Management
Background:
- Antidepressant drugs are frequently the first-line treatment for neuropathic pain.
- Uncertainty exists regarding the comparative effectiveness of different antidepressants and their safety profiles.
Purpose of the Study:
- To evaluate the analgesic efficacy and safety of antidepressant medications for neuropathic pain.
- Exclusion of studies on migraine and headache to focus on other neuropathic pain conditions.
Main Methods:
- Systematic review of randomized controlled trials (RCTs) identified through comprehensive database searches (MEDLINE, EMBASE, Cochrane Library).
- Data extraction and quality assessment performed independently by two reviewers.
- Calculation of Relative Risk (RR) and Number-Needed-to-Treat (NNT) for effectiveness and adverse effects.
Main Results:
- Tricyclic antidepressants (TCAs) demonstrate effectiveness, with amitriptyline showing a Number-Needed-to-Treat (NNT) of 2 for significant pain relief.
- Limited evidence supports the effectiveness of newer selective serotonin reuptake inhibitors (SSRIs) for neuropathic pain.
- TCAs were ineffective for HIV-related neuropathies; NNT for diabetic neuropathy was 1.3 and for postherpetic neuralgia was 2.2.
Conclusions:
- Antidepressants are effective treatments for various forms of neuropathic pain, with strong evidence supporting TCAs like amitriptyline.
- Current data on SSRIs is limited, hindering definitive conclusions on their comparative effectiveness.
- Further research on SSRIs is necessary to identify the most effective antidepressant for neuropathic pain management.