A family with Fabry disease diagnosed by a single angiokeratoma.
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This case presents a 39-year-old gentleman with a single angiokeratoma on the abdomen. Because of a family history of early onset cardiac disease, testing for Fabry disease was performed and a mis-sense mutation (A143T) in the Fabry gene confirmed the diagnosis. The unusual aspect of this case is that the patient otherwise had normal health. His only detectable abnormality was a high serum creatinine at 116 mmol/L. Two further affected males and four carrier females were detected on family screening. We tested a further five patients with a single angiokeratoma for Fabry disease. In the five tested though, no suggestive personal or family history was given for any of the patients and no further cases were detected. This case highlights the need for vigilance within dermatology clinics to consider Fabry disease even if a solitary angiokeratoma is the only presenting feature. Some patients do display a milder phenotype and thus a detailed family history should always be taken. As in this case, a solitary angiokeratoma and a suspicious family history may be the only clue. Because enzyme replacement therapy is now available, the potential benefits for the patient and their family are high.