A peculiar subphenotype in the fra(X) syndrome: extreme obesity‐short stature‐stubby hands and feet‐diffuse hyperpigmentation. Further evidence of disturbed hypothalamic function in the fra(X) syndrome?

In this report we describe two fra(X) adults and two prepubertal fra(X) brothers with a combination of distinct phenotypic findings: extreme obesity, short stature, stubby hands and feet and diffuse hyper-pigmentation. These clinical abnormalities may be an additional indication of a specific hypothalamic disturbance in the fra(X) syndrome.