FD is a X-chromosome linked genetic disorder characterized by disturbance in glycosphingolipid catabolism, caused by a deficiency of the enzyme alpha-galactosidase A. Early signs and symptoms occur from childhood to adolescence and include intermittent paresthesia and acroparesthesia, “Fabry crisis” (episodes of intense pain), recurrent fever, angiokeratomas, cornea verticillata, mild proteinuria, globotriaosylceramide in urinary sediment and digestive symptoms such as both diarrhea and constipation, nausea, vomiting and abdominal cramps. The gene discussed is GLA; the disease is angiokeratoma.