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In the third patient , the MPO - ANCA titre increased to 204 U / ml and she developed a higher fever , oral ulcers and polyarthralgia , but the symptoms resolved 2 weeks after stopping PTU therapy , and the MPO - ANCA titre decreased to 20 . 7 U / ml by 4 months after discontinuing PTU .
 Disease: fever; Disease: oral ulcers; Disease: polyarthralgia; Chemical: PTU; Chemical: PTU
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: fever; Disease: oral ulcers; Disease: polyarthralgia; Chemical: PTU; Chemical: PTU