1417
We conclude that methylphenidate mediated vasculitis should be considered in patients with neurological symptoms and a history of methylphenidate therapy .
 methylphenidate, vasculitis, methylphenidate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 methylphenidate, vasculitis, methylphenidate