To the Editor: Tonna and Laing (May 15 issue)1 describe a patientwith secondary syphilis. I question the authors' use of theterm "keratoderma blennorrhagica," which are the psoriasiformand vesicular pustular lesions of the palms and soles seen inReiter's syndrome, along with symptoms involving the joints,eyes, and urinary tract. Although similar, the lesions depictedin this Image in Clinical Medicine appear to be the typicalsymmetric papules and plaques with collarette scales (i.e.,Biett collarettes) seen on the palms and soles in secondarysyphilis. The lesions shown appear to be classic and pathognomonicfor secondary syphilis.
Peter C. Lombardo, M.D. Columbia University College of Physicians and Surgeons New York, NY 10022
References
Tonna I, Laing RBS. Keratoderma blennorrhagica. N Engl J Med 2008;358:2160-2160. [Free Full Text]
The authors reply: We agree with Lombardo that the term "keratoderma blennorrhagicum" is often used in conjunction with Reiter'ssyndrome. However, syphilis can mimic a number of conditions,and as Lombardo suggests, the lesions look similar to keratoderma.We wanted to make the point that when someone presents withsuch a rash on the soles, the differential diagnosis shouldinclude secondary syphilis.
Ivan Tonna, M.R.C.P. Robert B.S. Laing, M.D. Aberdeen Royal Infirmary Aberdeen AB25 2ZN, Scotland