Background: Chromosome 4q deletion is a rare genetic disorder affecting an estimated 1 out of 100,000 people. It is characterized by microdeletions of the long arm of chromosome 4 with variable clinical presentations including heart defects, craniofacial and skeletal abnormalities, short stature, and developmental delays. While behavioral and psychiatric symptoms have been reported in a small number of patients with chromosome 4q deletions, none of these reports have described the hyperphagia or…
