Psoriatic arthritis

Obesity isn’t just a comorbidity—it can influence inflammation, disease activity, and treatment response. Join our second Tuesday Night Rheumatology webinar this month as leading experts explore the biology of fat and its impact on rheumatic disease. Register: https://t.co/OIQUZqANEP
Dr. John Cush @RheumNow( View Tweet )
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Weight Loss Improves Psoriatic Disease Substantially!

Jack Cush, MD

Even before the introduction of incretin therapy and bariatric surgery, many randomized and interventional studies (2019–2026) have consistently showed that weight loss produces clinically meaningful, dose-dependent improvement in both psoriasis and psoriatic arthritis.

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A Day of Infamy (9.11.2026)

Jack Cush, MD

Dr. Jack Cush reviews the news and journal reports from this past week on Rheumnow.com - including obesity, disappointing durability with GLP-1 drugs, AI diagnoses and worries about CV risk in ANCA-associated vasculitis. And take this week's RheumIQ quiz

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Meta-analysis 24 studies (3015 hidradenitis suppurativa pts) taking IL-17 inhibitor, IBD adverse events were rare, w/ no difference in IBD risk betw IL-17i & PBO (0.23% vs 0 of 2572 vs 1066 pts respectively) thru wk 16. The reported assocn of IL-17 inhibitors w/ IBD risk is https://t.co/kDwR5Fc1zI
Dr. John Cush @RheumNow( View Tweet )
Difficult PsA is called ‘difficult-to-manage’ (D2M) or ‘treatment-refractory’ dz (TRD). Data from 5 Nordic PsA registries 14,362 ps, D/Cs of ≥2/≥3/≥4 b/tsDMARDs in 36%/18%/10%. Freq of D2M low 2%/3%/3%, & TRD was 1.2%/1.2%/0.8%. Female #s, depression, & opioids incr w/ # of https://t.co/FkQU5BVRn2
Dr. John Cush @RheumNow( View Tweet )
High BMI decreases the odds for MDA in PsA, esp w/ TNFi Rx (but not Inflx, IL-17i, IL-12/23i, IL-23i, JAKi). Longitudinal PsA cohort 1291 pts (mean BMI 29); Higher BMI independently assoc w/ signif. lower odds for MDA (OR 0.97), also female, age, smoking, FM & Xray damage. https://t.co/zAJ8Pmk1HY
Dr. John Cush @RheumNow( View Tweet )
Join us for the first of four webinars this month! This Journal Club will explore the TOGETHER PsA and STEP 9 trials, and what emerging evidence tells us about the complex relationship between obesity, weight loss and rheumatic disease. The authors and leading experts will: • https://t.co/xpnqim1VKH
Dr. John Cush @RheumNow( View Tweet )
Join us for the first of four webinars this month! Our Journal Club explores the TOGETHER PsA and STEP 9 trials, and what emerging evidence reveals about obesity, weight loss and rheumatic disease. Featuring Drs. Philip Mease, Tom Appleton and Jack Cush. https://t.co/KkVJPyhKF1
Dr. John Cush @RheumNow( View Tweet )
NEJM images: Jaccoud’s arthropathy is a chronic, deforming;from laxity of the ligaments & tendons (not damage to bone & cartilage). Deformities are reducible & no erosions on Xray. Jaccoud’s mimics RA, but most seen w/ SLE. https://t.co/99WDNcpT5c https://t.co/EdiGW1dDWY

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Dr. John Cush @RheumNow( View Tweet )
NEW FROM EULAR: A real-world analysis of predictors of IBD in PsA. 🔎 In patients with PsA, signs and symptoms of IBD may appear before diagnosis, but do we know what to look for? Explore the poster: https://t.co/JX0Y0AQ07N Sponsored by AbbVie Medical Affairs + Health Impact. https://t.co/zx9kjsiZfZ

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Dr. John Cush @RheumNow( View Tweet )
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Treating Obesity is Disease-Modifying (9.4.2026)

Jack Cush, MD

Dr. Jack Cush reviews the news and journal articles from the past week on RheumNow.com.  New drugs approved, new drugs halted and some drugs out of control. Ready to test your knowlege? Take this week's quiz!

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Sleep and Obesity: A Bidirectional Relationship

Jack Cush, MD

In July 2026, JAMA concisely reviewed the bidirectional relationship between sleep health and obesity. Obesity affects roughly 40% of US adults and sleep problems affect nearly one-third. This review outlines the biological mechanisms and clinical interventions relevant to weight management.

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DERM on RheumNow PODCAST (August 2026) The Derm on RheumNow podcast is a review of recent citations and content curated for dermatologists – addressing Psoriasis, PsA, CLE, vasculitis, HS, CTD skin disorders. Dermatology drugs, biologics, and JAK inhibitors - their use, https://t.co/u2sJqCgDJS
Dr. John Cush @RheumNow( View Tweet )
Rheums! Do you have a Rheumatology question or case for Dr. Cush? Record it here, and we may feature it on an upcoming podcast. Tell us your name and where you practice rheumatology. https://t.co/LZ59KW8HdA https://t.co/DwHdvpTYax

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Dr. John Cush @RheumNow( View Tweet )
SELECT-PsA 2 subanalysis of 195 active PsA not responding to TNFi shows switching to upadacitinib 15 (vs PB) was superior @wk 24 - ACR20 (58% vs 22%), ACR50 (38% vs 9.5%), ACR70 (22% vs 0%), MDA (24% vs 3%) & maintained thru wk 152. Switching MOAs makes sense! https://t.co/YEkZuQ95Mu
Dr. John Cush @RheumNow( View Tweet )
Aortic inflammation (Aortopathies) occurs in autoimmune rheumatic diseases (ARD) including Takayasus, #GCA, SLE, RA, AS, SSc, relapsing polychondritis, Cogan’s syndr, Behçet’s, & IgG4-related disease). Dx imaging options: CTA, MRI, & PET/CT. Underlying path may be granulomatous, https://t.co/lKBhEnTcKB
Dr. John Cush @RheumNow( View Tweet )
20 long-standing PsO pts (freq nai,scalp dz) (b/tsDMARD-naive) Rx w/ OL apremilast 30 bid x 6 mos. Enthesitis (MRI or HR-pQCT) stable, PsAMRIS stable; no new erosions, but PASI (11-->5) & TJC signif improved (3.2-->0.8) https://t.co/UjACvXyvKs https://t.co/xfQGcW0yz7

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Dr. John Cush @RheumNow( View Tweet )
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Rheum Scholarship (8.21.2026)

Jack Cush, MD

Dr. Cush reviews the news and journal articles from this past week on RheumNow.com; talking about lumbar belts, scholarships and misdiagnosis.

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Joint Pain Prevalence is not Declining A current report from the national NHIS survey shows that over half of US adults diagnosed with arthritis reported moderate to severe joint pain. https://t.co/zq7pGaZO72 https://t.co/kvco72v5IZ

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Dr. John Cush @RheumNow( View Tweet )
MASLD - Spanish review of 330 pts (101 psoriasis, 127 PsA, 102 controls) found metabolic-dysfunc-assoc steatotic liver Dz in 48% PsO, 32% PsA, 9% controls (p < 0.001). FibroScan tended higher in PsO 6.01 PsA 5.1 vs 4.9 controls https://t.co/wPxbLwVlOW https://t.co/ZtqYX5HPZa

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Dr. John Cush @RheumNow( View Tweet )
Can Effective Psoriasis Therapy Prevent Psoriatic Arthritis? A review article assesses and integrates mechanistic, imaging, and clinical evidence to examine whether effective treatment of psoriasis may modify the future risk of psoriatic arthritis (PsA). https://t.co/3gnV3eaKiu
Dr. John Cush @RheumNow( View Tweet )
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Can Effective Psoriasis Therapy Prevent Psoriatic Arthritis?

Jack Cush, MD

A review article assesses and integrates mechanistic, imaging, and clinical evidence to examine whether effective treatment of psoriasis may modify the future risk of psoriatic arthritis (PsA).

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POETYK PsA-1: Deucravacitinib in Biologic-Naïve PsA POETYK PsA-1 trial tested the disease modifying efficacy of deucravacitinib, a tyrosine kinase 2 (TYK2) inhibitor, in PsA patients and was shown to be superior vs to placebo for clinical responses, patient-reported outcomes, https://t.co/6ptGmzCoQ9
Dr. John Cush @RheumNow( View Tweet )
2026 BSR Pain Guideline: What Rheumatologists Need to Know The British Society for Rheumatology has issued its first guideline dedicated solely to pain in inflammatory arthritis (IA)—covering RA, PsA, axial SpA and JIA. https://t.co/3Jtneox8Rh https://t.co/06ccLhjhMh

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Dr. John Cush @RheumNow( View Tweet )
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Doubting RS3PE (8.14.2026)

Jack Cush, MD

Dr. Jack Cush reviews the news and journal articles this week where RheumNow featured info on cancer, deadly viruses, AI rules, poetry and good moons rising.

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Therapeutic Updates

Label update: Structural damage progression in active PsA

Sponsored by Johnson & Johnson Medical Affairs
J&J RX Update
Listen to Dr. Catherine Bakewell’s review of clinical data from a recent label update.
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PsA GRAPPA domains: Outcomes With a JAKi

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Dr. Schwartzman and Dr. Ruderman discuss how PsA disease activity across GRAPPA domains may guide treatment decisions, sharing both the evidence for and their experience with a JAKi across domains.
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Recent Blogs

Advanced Practice Rheum

Methotrexate

Jack Cush, MD
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In this session, Dr. Jack Cush reviews methotrexate.
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Advanced Practice Rheum

Evaluation of Rheumatic Complaints

Jack Cush, MD
Eval of Rheum Complaints Cover Image
Dr. Cush provides a systematic approach to evaluating musculoskeletal and rheumatic complaints in clinical practice.
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Best of 2022: The Enthesitis Challenge in Psoriatic Arthritis

Robert Chao, MD
heel enthesitis spur calcaneal
A colleague of mine once told me an interesting story of how her father, who was a doctor, misdiagnosed his wife with fibromyalgia when she actually had psoriatic arthritis with enthesitis all along. I would venture out and say that the average physician would have trouble evaluating enthesitis because even we, as rheumatologists do! 
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Podcasts

  • PsA Topic Podcast compilation
  • EULAR 2026 Daily Podcast Day 4c
  • EULAR 2026 Daily Podcast Day 4a
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