Which history findings suggest ankylosing spondylitis (AS))?

Updated: Jul 17, 2018
  • Author: Lawrence H Brent, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

Key components of the patient history that suggest ankylosing spondylitis (AS) include the following:

  • Insidious onset of low back pain

  • Onset of symptoms before age 40 years

  • Presence of symptoms for more than 3 months

  • Symptoms worse in the morning or with inactivity

  • Improvement of symptoms with exercise [1]


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