PubMed · 15530622
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Ajit Singh Kashyap, Kuldip Parkash Anand, Surekha Kashyap, Abhijeet Anand. Peripheral neuropathy.. https://doi.org/10.1016/s0140-6736(04)17346-7
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OBJECTIVE: To report a case of a patient who experienced serious, intractable epistaxis warranting emergency department (ED) visits and hospital admission after initiation of topiramate therapy. CASE SUMMARY: A 61-year-old woman with significant cardiovascular disease was started on topiramate 25 mg daily for lower extremity neuropathy. After 7 days of treatment, she began to experience severe, intractable epistaxis that lasted 8 days, warranting an ED visit. The epistaxis resolved 1 week after topiramate discontinuation. Topiramate was restarted 3 months later, and the patient again developed intractable epistaxis. After 2 days of epistaxis, she returned to the ED with significant anginal pain and was admitted to the hospital, where she received 2 units of packed red blood cells. One week after stopping topiramate, the epistaxis stopped. At the time of writing, she had exhibited no epistaxis for 6 months. According to the Naranjo probability scale, topiramate was the probable cause of epistaxis. DISCUSSION: Topiramate is a neuromodulatory compound approved for management of migraines, as well as partial and generalized tonic-clonic seizures. Over the past decade, its use has expanded to include many other neuropathic conditions. Currently, epistaxis has been reported in only 1-4% of patients receiving topiramate in clinical trials; however, these data were derived from a young study population. Like topiramate, calcium-channel blockers (CCBs) modulate voltage-gated L type calcium ion channels. These specific channels are located on vascular smooth muscle and non-contractile tissues such as platelets. Due to their possible antiplatelet effects, CCBs have been associated with an increased risk of hemorrhage, epistaxis, and prolonged bleeding time. The same may hold true for topiramate. CONCLUSIONS: Topiramate, particularly in combination with antiplatelet medications, may be associated with severe, intractable epistaxis. Intractable epistaxis should be added to the list of potentially serious adverse reactions that are monitored when topiramate is administered.
There are many types of peripheral nerve disorders that lead to peripheral neuropathy. Symptoms associated with peripheral neuropathy lack consistent, easy to treat qualities, and provide a constant challenge for physicians who encounter the sequelae of neuropathy. This review discusses medications, nutritional supplements, and topical and physical modalities that are effective in treating neuropathy associated with diabetes.
Two attitudes can be proposed, one consisting of making a diagnosis of neuropathy, the other seeking to grade the stage that it has reached in order to give a prognosis and above all determine the right way in which to educate the patient. In order to do this, it is important for the diagnosis to be thorough. It should be based both on listening to what the patient has to say and examining him/her. It is vital to listen to the patient because the warning signs are discreet, yet very evocative, and they will be a great help in making a positive diagnosis. They should not be confused with signs of arterial damage. They should then be interpreted by means of clinical examination and the tools that are available, i.e. essentially monitoring the osteo-tendinous reflexes and sensory signs. The sensory signs can only be studied with high-quality instruments, i.e. either a monofilament of proven technical quality and that should be used with care in line with good clinical practice recommendations, or by using a graduated tuning fork, or a neuroesthesiometer which will make it possible to obtained graduated responses, not simply binary responses of the "yes/no" variety. A whole series of scores have been put forward combining both functional and physical signs, making it possible to try to quantify the stage reached and the extent of the neuropathy. It is only by using a thorough and regularly applied routine that we can progress to establishing a better prognosis and providing a better educational service for the patient.