Sleeping issues
As infants, individuals with WBS are often tearful and awkward children, especially restless at night. Sleep difficulties are common, even later in life (difficulty falling asleep or staying asleep, waking up at night, etc.). The percentage of children with Williams-Beuren syndrome suffering from sleep-in and sleep-through problems is higher than usual.
Restlessness is often associated with physical complaints such as vomiting, abdominal cramps, constipation, diarrhoea and/or excessive calcium levels.