Serum IgG, IgA, IgM, IgD and IgE in lichen planus: no evidence for a humoral immunodeficiency

Serum IgG, IgA, IgM, IgD and IgE concentrations were examined in a series of thirty‐five patients with lichen planus of the oral mucosa. No significant differences in serum immunoglo‐bulins were detected in patients with lichen planus compared with controls, providing little evidence for a humoral immunodeficiency in lichen planus.