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IMPLICATIONS : This case documents a patient who developed dizziness with downbeating nystagmus while receiving a relatively large dose of IV patient - controlled analgesia morphine .
 Disease: dizziness; Disease: downbeating nystagmus; Chemical: morphine
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: dizziness; Disease: downbeating nystagmus; Chemical: morphine