Gaucher disease is an autosomal-recessive lysosomal storage disease characterised by the accumulation of glucocerebroside in macrophages; it is caused by mutations in glucocerebrosidase gene-1 in many organ tissues such as the liver, spleen, and bone marrow. Its different clinical subtypes, according to the presence and severity of neurological symptoms, are as follows: type I, non-neuronopathic (95%); type II, acute neuronopathic; and type III, chronic neuronopathic. Type IIIC is a rare subgroup characterised by cardiovascular involvement as well as eye-movement disorders and late-onset neurological symptoms. In such cases, homozygous D409H is the most frequently detected mutation. In this article, we report the case of a patient, aged 15 years and 8 months, with complaints of syncope and a diagnosis of type IIIC Gaucher disease.