A 22 year old woman complains of increasing fatigue and double vision


Question Number 1030
Question:
A 22 year old woman complains of increasing fatigue and double vision. She has recently has a barium swallow examination because of dysphagia, but the test was normal. On examination her reflexes, sensation and coordination are normal. She is noted to have difficulty speaking clearly. She has breathing problems which appear to improve with edrophonium chloride injections. Which of the above tests would be most useful?
a) HLA B27
b) anti-cholinesterase antibody
c) rheumatoid factor
d) Antinuclear antibody
e) Anti-DNA


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