3760
Downbeat nystagmus is often associated with structural lesions at the craniocervical junction , but has occasionally been reported as a manifestation of metabolic imbalance or drug intoxication .
 Disease: Downbeat nystagmus
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: Downbeat nystagmus