3317
CASE SUMMARY : We report the case of a 31-year - old patient hospitalized due to behavioral alterations and treated with oral zuclopenthixol , an antipsychotic from the thioxanthene family , who developed an acute , painful erection .
 painful erection, zuclopenthixol
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 painful erection, zuclopenthixol