Cicatricial Alopecia of the Scalp as a Manifestation of IgG4-Related Disease Mimicking Acne Keloidalis Nuchae
January 2026
in “
Journal of Cutaneous Immunology and Allergy
”
Studysummary In this case report, a young Japanese man was diagnosed with scalp IgG4-related disease, which mimicked acne keloidalis nuchae but was identified by histopathology and elevated serum IgG4 levels as a systemic fibroinflammatory disorder, highlighting the importance of differential diagnosis in atypical scarring alopecia.
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