because these manifestations may be so protean in nature , for example , stroke or transient ischaemic attack ( the most common ) , toxic encephalopathy , meningitis , brain abscess , visual loss , seizures , headache , backache , or acute mononeuropathy , the neurologist needs to consider infective endocarditis as a possible diagnosis in many patients .
C0038454
stroke
C0007787
transient ischaemic attack