Early identification of axial psoriatic arthritis among patients with psoriasis: a prospective multicentre study
Compose Response

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Author Information
First or given name, e.g. 'Peter'.
Your last, or family, name, e.g. 'MacMoody'.
Your email address, e.g.
Your role and/or occupation, e.g. 'Orthopedic Surgeon'.
Your organization or institution (if applicable), e.g. 'Royal Free Hospital'.
Statement of Competing Interests


  • A rapid response is a moderated but not peer reviewed online response to a published article in a BMJ journal; it will not receive a DOI and will not be indexed unless it is also republished as a Letter, Correspondence or as other content. Find out more about rapid responses.
  • We intend to post all responses which are approved by the Editor, within 14 days (BMJ Journals) or 24 hours (The BMJ), however timeframes cannot be guaranteed. Responses must comply with our requirements and should contribute substantially to the topic, but it is at our absolute discretion whether we publish a response, and we reserve the right to edit or remove responses before and after publication and also republish some or all in other BMJ publications, including third party local editions in other countries and languages
  • Our requirements are stated in our rapid response terms and conditions and must be read. These include ensuring that: i) you do not include any illustrative content including tables and graphs, ii) you do not include any information that includes specifics about any patients,iii) you do not include any original data, unless it has already been published in a peer reviewed journal and you have included a reference, iv) your response is lawful, not defamatory, original and accurate, v) you declare any competing interests, vi) you understand that your name and other personal details set out in our rapid response terms and conditions will be published with any responses we publish and vii) you understand that once a response is published, we may continue to publish your response and/or edit or remove it in the future.
  • By submitting this rapid response you are agreeing to our terms and conditions for rapid responses and understand that your personal data will be processed in accordance with those terms and our privacy notice.
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Vertical Tabs

Other responses

Jump to comment:

  • Published on:
    Correspondence on ‘Early identification of axial psoriatic arthritis among patients with psoriasis: a prospective multicentre study’
    • Xiao-Jun Shi, Rheumatology Physician Department of Rheumatology, Dongfang Hospital, Beijing University of Chinese Medicine
    • Other Contributors:
      • Qiang Tong, Rheumatology Physician
      • Xiu-Juan Hou, Rheumatology Physician
      • Shu-Feng Wei, Rheumatology Physician
      • Chen Li, Rheumatology Physician

    With great interest, we read the study by Proft et al. 1In this prospective multicenter study, the authors applied a dermatologist-centered screening tool followed by a structured rheumatologic examination, including MRI of the sacroiliac joints and spine, for the early identification of psoriatic arthritis with axial involvement (axPsA). We endorse the authors for completing an important clinical study, the results of which could have important implications for the early identification of axPsA in patients with psoriasis. However, there are some aspects that need to be focused on and discussed.
    First, there is some controversy regarding the definition of axPsA. Some studies have emphasized the importance of imaging, and the presence of sacroiliac arthritis with grade 3 unilaterally or grade 2 and above bilaterally, or spinal syndesmophyte(s) according to CASPAR criteria is defined as axPsA.2 It has also been suggested that axPsA requires meeting the modified New York criteria of AS criteria or applying the Assessment of SpondyloArthritis International Society (ASAS) classification criteria for axial spondyloarthritis (axSpA), which require the presence of inflammatory back pain (IBP) in the patient. However, back pain is not always present in patients with axPsA. The use of chronic back pain as the primary screening condition is debatable. One study showed that up to 44% to 55% of patients with axPsA had only imaging involvement (including sacroiliac joints or spine...

    Show More
    Conflict of Interest:
    None declared.