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Secondary hyperalgesia shares clinical characteristics with neurogenic hyperalgesia in patients with neuropathic pain .
 Secondary hyperalgesia, neurogenic hyperalgesia, neuropathic pain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Secondary hyperalgesia, neurogenic hyperalgesia, neuropathic pain