Drug succeeds as a single, long-term maintenance therapy, with a better risk-to-benefit ratio than corticosteroids.
The Bruton tyrosine kinase inhibitor is also under study for other autoimmune diseases.

Comorbidities in Autoimmune Skin Diseases

Alvan Feinstein, both a clinician and an epidemiologist, introduced the concept of comorbidity as a peculiar and important feature of chronic diseases almost 50 years ago.1 This concept may still require a more precise definition and a deeper…