Williams syndrome is a rare genetic disorder that is caused by a mutation in the long arm of one of the seventh pair chromosomes – 7q11.23 and occurs in 1 in 20,000 births. Affected children differ from each other, but have some common clinical features, such as: supravalvular stenosis of the main artery – aorta, hypothyroidism, hypercalcemia, or impaired control of precise movements. In addition to these ailments, children have characteristic facial features resembling fairytale elves, but they are most distinguished by love for music and language skills. Occupational therapy may be a supplement to early therapeutic intervention and fulfill a diagnostic, information, support, stimulation and therapeutic function.

Key words: Williams-Beuren Syndrome, occupational therapy, early therapeutic intervention.