2759
Although the neurochemistry of opiate - induced rigidity has yet to be fully elucidated , recent work suggests a role for a central adrenergic mechanism .
 Disease: rigidity
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: rigidity