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We present a 49 - year - old woman who developed a delusional parasitosis during treatment with pegylated interferon alpha - 2b weekly and ribavirin .
 Disease: delusional parasitosis; Chemical: pegylated interferon alpha - 2b; Chemical: ribavirin
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: delusional parasitosis; Chemical: pegylated interferon alpha - 2b; Chemical: ribavirin