IgG4-related skin disease

IgG4-related skin disease is the recommended name for skin manifestations in IgG4-related disease (IgG4-RD). Multiple different skin manifestations have been described.
Classification.
Although a clear understanding of the various skin lesions in IgG4-related disease is a work in progress, skin lesions have been classified into subtypes based on documented cases:
In addition, Wells syndrome has also been reported in a case of IgG4-related disease.
Note.
Note: