6584
Administration of sumatriptan in subarachnoid haemorrhage ( SAH ) patients , misdiagnosed as migraine patients , may induce symptomatic cerebral vasospasm with potentially dangerous consequences .
 symptomatic cerebral vasospasm, sumatriptan
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:
 symptomatic cerebral vasospasm, sumatriptan