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Diabetes Health Center

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Antidepressants: 1st Choice for Nerve Pain

Study Says Older Antidepressants Should Be Used to Treat Certain Types of Pain

WebMD Health News

July 19, 2005 -- Antidepressants should be used as an initial treatment for the frequently disabling pain caused by nerve tissue damage, according to a new review of research on the issue.

Researchers reviewed 50 studies of 19 different antidepressants in the treatment of pain caused by nerve tissue damage, also known as neuropathic pain. They found that the older class of antidepressants called tricyclics can provide significant pain relief. These include medications such as amitriptyline, imipramine, clomipramine, desipramine, and nortriptyline.

Anticonvulsant drugs were also shown to alleviate neuropathic pain.

Nerve pain from diabetes, called diabetic neuropathy, occurs after chronically elevated blood sugars damage nerves throughout the body. A complication of shingles called postherpetic neuralgia causes nerve pain for weeks to years after the shingles rash has disappeared. And some cancer treatments -- radiation and some chemotherapy drugs -- can also result in nerve damage.

There is limited evidence that newer antidepressants, called selective serotonin reuptake inhibitors (SSRIs), may also provide neuropathic pain relief. Researchers say more studies are needed before they can be recommended for this use. SSRIs include Prozac, Celexa, Luvox, Zoloft, and Paxil.

Pain caused by nerve tissue damage often occurs as a burning, tingling, or stabbing sensation.

Researchers say antidepressants have been used for neuropathic pain for many years, and this review of research shows that it is still probably the best approach to take. Antidepressants are thought to ease pain caused by nerve damage by dampening pain signals sent to the brain.

Anticonvulsant drugs, such as Neurontin, Tegretol, and Dilatin, originally developed to treat epilepsy, are also often used to treat nerve pain, but researchers say they should be reserved as a second line of treatment. It remains unclear how these drugs work to dampen nerve pain.

Older Antidepressants Still Work for Nerve Pain

In the review, which appears in the current issue of the Cochrane Library, researchers evaluated studies on antidepressants and anticonvulsant drugs in the treatment of neuropathic pain involving more than 2,500 people.

The results showed that two-thirds of people with pain caused by nerve damage who took tricyclic antidepressants obtained at least moderate pain relief. But about one-fifth found the side effects of antidepressant treatment, such as drowsiness, dry mouth, and blurred vision, unacceptable and stopped taking the drugs.

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