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The history and findings in this case are consistent with a diagnosis of psoriatic spondylitis.

Psoriatic spondylitis is a form of psoriatic arthritis (PsA) that affects the spine and the joints in the pelvis (axial involvement). PsA is a chronic, heterogeneous condition that affects approximately 25%-30% of patients with psoriasis, particularly those with severe psoriasis or nail or scalp involvement. It is characterized by musculoskeletal inflammation (arthritis, enthesitis, spondylitis, and dactylitis). PsA is a spondyloarthritis that can be found either in the peripheral or axial skeleton. If not treated, it may result in permanent joint damage and loss of function. 

Patients with PsA may present with nail and skin changes, peripheral arthritis, enthesitis, dactylitis, and axial spondyloarthritis (SpA), either alone or in combination. Common symptoms of axial involvement in PsA include morning back/neck stiffness that lasts longer than 30 minutes, neck or back pain that improves with activity and worsens after prolonged inactivity, and diminished mobility. PsA affects men and women equally, and typically develops when patients are between 30 and 50 years of age. As with psoriasis, PsA is associated with numerous comorbidities, such as cardiovascular disease, metabolic syndrome, obesity, diabetes, depression, uveitis, and anxiety.

The diagnosis of psoriatic spondylitis is confirmed by physical examination and imaging. Axial PsA characteristics, including sacroiliitis and spondylitis, are distinguished by the development of syndesmophytes (ie, ossification of the annulus fibrosus). Useful imaging tools for evaluating patients with PsA include plain radiography, CT, ultrasound, and MRI. Although MRI and ultrasound may be more sensitive than plain radiography for detecting early joint inflammation and damage and axial changes, including sacroiliitis, they are not mandatory for a diagnosis of PsA to be made.

International guidelines have been developed by the American College of Rheumatology/Spondylitis Association of America/Spondyloarthritis Research and Treatment Network, the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA), the European Alliance of Associations for Rheumatology (EULAR), and the Assessment of Spondyloarthritis International Society to guide the treatment of axial PsA. The goals of treatment include minimizing pain, stiffness, and fatigue; improving and preserving spinal flexibility and posture; improving functional capacity; and maintaining the ability to work, with a target of remission or minimal/low disease activity.

Treatment options for symptomatic relief include nonsteroidal anti-inflammatory drugs (NSAIDs), glucocorticoids, and sacroiliac joint injections with glucocorticoids for mild disease; long-term treatment with systemic glucocorticoids is not recommended. If patients remain symptomatic or have erosive disease or other indications of high disease activity, guidelines recommend initiation of a tumor necrosis factor (TNF) inhibitor (eg, adalimumab, etanercept, infliximab, golimumab, certolizumab pegol). Disease-modifying antirheumatic drugs (eg, methotrexate) are not routinely prescribed for patients with axial disease because they have not been shown to be effective. In patients with significant skin involvement, treatment with interleukin-17A inhibitors may be preferred to TNF inhibitors. 

If patients have an inadequate response to a first trial of a TNF inhibitor, guidelines recommend trying a second TNF inhibitor before switching to a different class of biologic. For patients who do not respond to TNF inhibitors, a Janus kinase inhibitor (tofacitinib) may be considered. Additionally, nonpharmacologic therapies (eg, exercise, physical therapy, massage therapy, occupational therapy, acupuncture) are recommended for all patients with active PsA.

Herbert S. Diamond, MD, Professor of Medicine (retired), Temple University School of Medicine, University of Pittsburgh; Chairman, Department of Medicine Emeritus, Western Pennsylvania Hospital, Pittsburgh, PA.

Herbert S. Diamond, MD, has disclosed no relevant financial relationships.

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The history and findings in this case are consistent with a diagnosis of psoriatic spondylitis.

Psoriatic spondylitis is a form of psoriatic arthritis (PsA) that affects the spine and the joints in the pelvis (axial involvement). PsA is a chronic, heterogeneous condition that affects approximately 25%-30% of patients with psoriasis, particularly those with severe psoriasis or nail or scalp involvement. It is characterized by musculoskeletal inflammation (arthritis, enthesitis, spondylitis, and dactylitis). PsA is a spondyloarthritis that can be found either in the peripheral or axial skeleton. If not treated, it may result in permanent joint damage and loss of function. 

Patients with PsA may present with nail and skin changes, peripheral arthritis, enthesitis, dactylitis, and axial spondyloarthritis (SpA), either alone or in combination. Common symptoms of axial involvement in PsA include morning back/neck stiffness that lasts longer than 30 minutes, neck or back pain that improves with activity and worsens after prolonged inactivity, and diminished mobility. PsA affects men and women equally, and typically develops when patients are between 30 and 50 years of age. As with psoriasis, PsA is associated with numerous comorbidities, such as cardiovascular disease, metabolic syndrome, obesity, diabetes, depression, uveitis, and anxiety.

The diagnosis of psoriatic spondylitis is confirmed by physical examination and imaging. Axial PsA characteristics, including sacroiliitis and spondylitis, are distinguished by the development of syndesmophytes (ie, ossification of the annulus fibrosus). Useful imaging tools for evaluating patients with PsA include plain radiography, CT, ultrasound, and MRI. Although MRI and ultrasound may be more sensitive than plain radiography for detecting early joint inflammation and damage and axial changes, including sacroiliitis, they are not mandatory for a diagnosis of PsA to be made.

International guidelines have been developed by the American College of Rheumatology/Spondylitis Association of America/Spondyloarthritis Research and Treatment Network, the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA), the European Alliance of Associations for Rheumatology (EULAR), and the Assessment of Spondyloarthritis International Society to guide the treatment of axial PsA. The goals of treatment include minimizing pain, stiffness, and fatigue; improving and preserving spinal flexibility and posture; improving functional capacity; and maintaining the ability to work, with a target of remission or minimal/low disease activity.

Treatment options for symptomatic relief include nonsteroidal anti-inflammatory drugs (NSAIDs), glucocorticoids, and sacroiliac joint injections with glucocorticoids for mild disease; long-term treatment with systemic glucocorticoids is not recommended. If patients remain symptomatic or have erosive disease or other indications of high disease activity, guidelines recommend initiation of a tumor necrosis factor (TNF) inhibitor (eg, adalimumab, etanercept, infliximab, golimumab, certolizumab pegol). Disease-modifying antirheumatic drugs (eg, methotrexate) are not routinely prescribed for patients with axial disease because they have not been shown to be effective. In patients with significant skin involvement, treatment with interleukin-17A inhibitors may be preferred to TNF inhibitors. 

If patients have an inadequate response to a first trial of a TNF inhibitor, guidelines recommend trying a second TNF inhibitor before switching to a different class of biologic. For patients who do not respond to TNF inhibitors, a Janus kinase inhibitor (tofacitinib) may be considered. Additionally, nonpharmacologic therapies (eg, exercise, physical therapy, massage therapy, occupational therapy, acupuncture) are recommended for all patients with active PsA.

Herbert S. Diamond, MD, Professor of Medicine (retired), Temple University School of Medicine, University of Pittsburgh; Chairman, Department of Medicine Emeritus, Western Pennsylvania Hospital, Pittsburgh, PA.

Herbert S. Diamond, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

The history and findings in this case are consistent with a diagnosis of psoriatic spondylitis.

Psoriatic spondylitis is a form of psoriatic arthritis (PsA) that affects the spine and the joints in the pelvis (axial involvement). PsA is a chronic, heterogeneous condition that affects approximately 25%-30% of patients with psoriasis, particularly those with severe psoriasis or nail or scalp involvement. It is characterized by musculoskeletal inflammation (arthritis, enthesitis, spondylitis, and dactylitis). PsA is a spondyloarthritis that can be found either in the peripheral or axial skeleton. If not treated, it may result in permanent joint damage and loss of function. 

Patients with PsA may present with nail and skin changes, peripheral arthritis, enthesitis, dactylitis, and axial spondyloarthritis (SpA), either alone or in combination. Common symptoms of axial involvement in PsA include morning back/neck stiffness that lasts longer than 30 minutes, neck or back pain that improves with activity and worsens after prolonged inactivity, and diminished mobility. PsA affects men and women equally, and typically develops when patients are between 30 and 50 years of age. As with psoriasis, PsA is associated with numerous comorbidities, such as cardiovascular disease, metabolic syndrome, obesity, diabetes, depression, uveitis, and anxiety.

The diagnosis of psoriatic spondylitis is confirmed by physical examination and imaging. Axial PsA characteristics, including sacroiliitis and spondylitis, are distinguished by the development of syndesmophytes (ie, ossification of the annulus fibrosus). Useful imaging tools for evaluating patients with PsA include plain radiography, CT, ultrasound, and MRI. Although MRI and ultrasound may be more sensitive than plain radiography for detecting early joint inflammation and damage and axial changes, including sacroiliitis, they are not mandatory for a diagnosis of PsA to be made.

International guidelines have been developed by the American College of Rheumatology/Spondylitis Association of America/Spondyloarthritis Research and Treatment Network, the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA), the European Alliance of Associations for Rheumatology (EULAR), and the Assessment of Spondyloarthritis International Society to guide the treatment of axial PsA. The goals of treatment include minimizing pain, stiffness, and fatigue; improving and preserving spinal flexibility and posture; improving functional capacity; and maintaining the ability to work, with a target of remission or minimal/low disease activity.

Treatment options for symptomatic relief include nonsteroidal anti-inflammatory drugs (NSAIDs), glucocorticoids, and sacroiliac joint injections with glucocorticoids for mild disease; long-term treatment with systemic glucocorticoids is not recommended. If patients remain symptomatic or have erosive disease or other indications of high disease activity, guidelines recommend initiation of a tumor necrosis factor (TNF) inhibitor (eg, adalimumab, etanercept, infliximab, golimumab, certolizumab pegol). Disease-modifying antirheumatic drugs (eg, methotrexate) are not routinely prescribed for patients with axial disease because they have not been shown to be effective. In patients with significant skin involvement, treatment with interleukin-17A inhibitors may be preferred to TNF inhibitors. 

If patients have an inadequate response to a first trial of a TNF inhibitor, guidelines recommend trying a second TNF inhibitor before switching to a different class of biologic. For patients who do not respond to TNF inhibitors, a Janus kinase inhibitor (tofacitinib) may be considered. Additionally, nonpharmacologic therapies (eg, exercise, physical therapy, massage therapy, occupational therapy, acupuncture) are recommended for all patients with active PsA.

Herbert S. Diamond, MD, Professor of Medicine (retired), Temple University School of Medicine, University of Pittsburgh; Chairman, Department of Medicine Emeritus, Western Pennsylvania Hospital, Pittsburgh, PA.

Herbert S. Diamond, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

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A 41-year-old man with a 5-year history of moderate to severe scalp psoriasis presents with complaints of intermittent pain and stiffness in his left hip and lower back of approximately 6 months' duration. The patient states that his back pain has been severe enough to wake him up on several occasions. Treatment with over-the-counter ibuprofen is moderately effective at relieving his pain. He also reports morning back stiffness that improves with motion, usually within an hour of awakening. The patient reports no fever, pain, swelling, or worsening of his scalp psoriasis. He is not aware of any injury or other triggering factor for his back pain. He takes an over-the-counter multivitamin daily and treats his scalp psoriasis with fluocinolone acetonide 0.01% oil. The patient is 5 ft 9 in and weighs 176 lb (BMI 26).

Physical examination reveals tenderness in the lumbar spine and associated decreased range of motion, as well as psoriatic plaques on the scalp. Vital signs are within normal ranges. Pertinent laboratory findings include erythrocyte sedimentation rate of 19 mm/h and C-reactive protein of 10 mg/L. Rheumatoid factor, antinuclear antibody, and anti-cyclic citrullinated peptide antibody were negative. Radiographic findings include sacroiliitis and bulky nonmarginal syndesmophytes. 

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