What is neuropathy?
Neuropathy is a long-term condition affecting the nerves, which can cause neuropathic pain and a loss of sensation.
Neuropathy can be a complication of conditions such as diabetes.
Neuropathic pain is a complex, long-term (chronic) pain state that is usually accompanied by tissue injury. With neuropathic pain, the nerve fibres themselves may be damaged or dysfunctional. These damaged nerve fibres send incorrect signals to other pain centres. The impact of nerve fibre injury includes a change in nerve function, both at the site of injury and in areas around the injury.
One example of neuropathic pain is phantom limb syndrome. This occurs when an arm or a leg has been removed due to illness or injury, but the brain still receives pain messages from the nerves that originally carried impulses from the missing limb. These nerves now misfire and cause pain.
Causes of neuropathic pain
Neuropathic pain often seems to have no obvious cause. However, some common causes include:
Symptoms of neuropathic pain
Neuropathic pain symptoms may include:
- Shooting and burning pain
- Tingling and numbness
Diagnosing neuropathic pain
Your doctor will conduct an interview and a physical examination. He or she may ask questions about how you would describe your pain, when the pain occurs, or whether anything specific triggers the pain.
Neuropathic pain treatment
Some studies suggest the use of non-steroidal anti-inflammatory drugs (NSAIDs) may ease neuropathic pain. Other people may need a stronger painkiller, such as one containing morphine. Anticonvulsant, antidepressant, and other types of drugs seem to work in some cases.
If another condition is involved, such as diabetes, better management of that disorder may help alleviate the pain.
In cases that are difficult to treat, a pain specialist may use invasive or implantable devices to manage the pain effectively. Electrical stimulation of the nerves involved in neuropathic pain generation may significantly control the pain symptoms.
Unfortunately, neuropathic pain often responds poorly to standard pain treatments and occasionally it may get worse instead of better over time. For some people, it can lead to serious disability.