Rheumatology
Clinical discussions on autoimmune diseases, biologic therapies, vasculitis, and musculoskeletal conditions.
Recent Discussions
What patient factors are most important when considering who needs a broader workup for osteoporosis prior to starting therapy?
A workup to rule out secondary causes must be done prior to starting therapy for osteoporosis. A good history and exam are recommended to look for any clues for modifiable factors. At a minimum, one should do CMP, 25-OH vitamin D, TSH, and a 24-hour urinary calcium or calcium/creatinine ratio should...
Which biologics for severe RA are safe in CKD4?
Most biologics, such as monoclonal antibodies, are large proteins that are not cleared by the kidneys, and thus, no dose adjustment is needed for renal impairment, and can be used in advanced stages of CKD. Keep in mind among tsDMARDs that the JAK inhibitors do have a renal dosing adjustment require...
Is there an evidence-based consensus on CT-derived Hounsfield unit thresholds for opportunistic assessment of osteoporosis, and how should such measurements be applied when DXA results are inconclusive or do not meet diagnostic criteria?
Per the International Society for Clinical Densitometry's official positions: "Opportunistic CT-based attenuation using Hounsfield Units (HU) can be used to estimate the likelihood of osteoporosis (L1 HU < 100) and normal (L1 HU > 150) bone density to support decisions regarding bone health assessm...
Do you view the difference between oral and sublingual cyclobenzaprine as clinically significant?
Yes. Oral cyclobenzaprine—a TCA analogue structurally identical to amitriptyline aside from a single double bond—has been used off-label for fibromyalgia for many years. Despite long-standing anecdotal benefit, a prospective placebo-controlled RCT showed only transient improvement at 4 weeks, with n...
What are the reasons for SLE specific labs to turn negative?
I agree and appreciate the answers by Dr @Dr. First Last and Dr @Dr. First Last. My answer may be stating the obvious, but I think it is important to mention that lupus is not infrequently over-diagnosed and overtreated. Serologies are sometimes over-interpreted with low-titer antibodies labeled as ...
Do you recommend chronic oral suppressive antibiotics after initial intensive treatment of 6-8 weeks in patients with culture-negative prosthetic joint or bone infections with retained hardware?
Another one of those questions without a clear-cut answer. Several retrospective, uncontrolled papers (I should know. I’ve co-authored one myself) suggest this practice is “helpful”. BUT, virtually all these observations are retrospective with relatively short-term follow-up (often 1 or 2 years), an...
How do you approach management and monitoring of a patient with features suggestive of early or incomplete antisynthetase syndrome (mechanics hands and positive antisynthetase antibody) but no objective evidence of myositis, arthritis, or ILD at presentation?
Anti-Ha is a very rare antibody, and its positive predictive value is low, particularly when relying on line blot or multiplex bead assays. Especially in the setting of a high ANA titer, a low-level anti-Ha signal may represent cross-reactivity or a false positive, as anti-Ha antibodies are cytoplas...
When treating osteoporosis, does your duration of maintenance bisphosphonate therapy post anabolic therapy with PTH analogue change based on C-telopeptide levels?
I have treated many patients with teriparatide and conducted non-clinical studies on PTH/PTHrP receptors. Despite the fact that there are no PTH/PTHrP receptors on osteoclasts, when PTH stimulates osteoblast activity, the normal coupling via osteoprotegerin is intact, and about 4 weeks after one det...
Do you generally utilize calcium channel blockers on an as needed basis for patients with Raynaud's phenomenon?
Can certainly help when patients have conditions that trigger Raynaud's. If otherwise healthy, I discuss keeping the extremities protected from excessive cooling.
What laboratory studies do you routinely order when evaluating a patient with interface dermatitis on biopsy?
Rule out lupus.