A member asked:

Si joint &low back pain for 2 weeks.how often does it indicate ankylosing spondylitis? if not as, what are other differentials that i can think of?

3 doctors weighed in across 2 answers

Very short time: 2 weeks is a short time for as. Look for fibromyalgia, muscle strains, and assure internal organs normal.

Answered 2/27/2017

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Back strain: Ankylosing spondylitis highly unlikely. Most likely is an acute strain. Give it time and it should resolve.

Answered 12/19/2013

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