Relapsing-remitting multiple sclerosis arising in a patient with atopic dermatitis on dupilumab

Despite a common CD4+ T-cell precursor, helper T (Th) 1 and 2 lymphocytes affect different immunologic responses, including cellular and humoral pathways, respectively. Th1 cells stimulate the activation of type 1 macrophages, IgG/immunoglobulin M production, and cytokine release (eg, interferon gamma [IFN-γ], interleukin 2) to respond to intracellular pathogens. In contrast, Th2 cells target…

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