Dermatomyositis in 2026: Are You Missing Anything Important in Real-World Practice? 

In this episode, host James Q. Del Rosso, DO, welcomes dermatologist and rheumatologist Joseph Merola, MD, to discuss the diagnosis and management of dermatomyositis (DM). From subtle cutaneous clues and systemic involvement to malignancy risk, myositis-specific antibodies, and an expanding treatment pipeline, Dr Merola highlights what dermatologists should recognize when DM enters the differential.

DM can present with classic findings such as Gottron papules, heliotrope rash, and the shawl sign, but other clues may be less obvious. Dr Merola discusses pruritic scalp disease, eyelid edema, linear extensor erythema, and nailfold capillary changes, as well as photodistributed eruptions that may be difficult to distinguish from cutaneous lupus. Beyond the skin, he outlines 5 areas to consider when evaluating patients with DM: cutaneous findings, muscle weakness, inflammatory arthritis, lung involvement, and malignancy.

The conversation moves from clinical assessment to diagnostic workup, including evaluation of proximal muscle weakness, the importance of asking about dysphagia, and the role of CK and aldolase. Dr Merola also explains when EMG, MRI, or muscle biopsy may add value and when classic skin findings combined with weakness and/or elevated muscle enzymes may provide sufficient diagnostic information.

Dr Del Rosso and Dr Merola also discuss malignancy risk and the clinical information provided by myositis-specific antibodies. Anti-TIF1γ and anti-NXP2 can signal greater malignancy risk, while anti-MDA5 is associated with clinically amyopathic disease and heightened concern for interstitial lung disease. Dr Merola considers how these findings can help inform risk assessment, screening, and collaboration with rheumatology and other specialties.

Finally, they review the treatment of both cutaneous and muscle disease, from photoprotection and established systemic therapies to JAK inhibition and emerging targeted treatments. Dr Merola reflects on a growing therapeutic pipeline* for a disease in which cutaneous involvement, in particular, has historically been challenging to manage.

Tune in to the episode for a clinically focused discussion of recognizing dermatomyositis, assessing systemic and malignancy risk, interpreting antibody profiles, and navigating treatment as new therapeutic options emerge.

*This episode was recorded prior to FDA approval of brepocitinib. The FDA has since approved brepocitinib for use in the United States.