2870
Two patients with similar clinical features are presented : both patients had chronic renal failure , on hemodialysis for many years but recently begun on a high - flux dialyzer ; both had been receiving a carbidopa / levodopa preparation ; and both had the onset of hallucinosis and recurrent seizures , which were refractory to anticonvulsants .
 chronic renal failure, carbidopa / levodopa, hallucinosis, seizures
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 chronic renal failure, carbidopa / levodopa, hallucinosis, seizures