Immunofluorescence studies on complement components in lichen amyloidosus

Immunofluorescence studies were carried out in 7 cases of lichen amyloidosus, chiefly to detect deposition of complement components in the cutaneous lesions. Examination of skin biopsy specimens revealed deposition of Clq, C3, C9 and IgM in all the patients studied. Complement and immunoglobulin levels by assays of simultaneously obtained serum samples were found to be almost within the normal limits.