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In this report we describe an unusual case of reversible levodopa - induced Oromandibular dystonia ( OMD ) in a PSP patient to highlight the importance of recognizing this drug related complication in the management of PSP , and discuss the possible underlying pathophysiology .
 Chemical: levodopa; Disease: Oromandibular dystonia; Disease: OMD; Disease: PSP; Disease: PSP
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:
 Chemical: levodopa; Disease: Oromandibular dystonia; Disease: OMD; Disease: PSP; Disease: PSP