My 5-year old child's hand is stuck in a clawing position, for a week now. He's able to open his hand but unable to spread his fingers. An orthopedist, a neurologist and a pediatrician couldn't diagnose it, stating something about uknown etiology.
They already tested for calcium and x-rayed the area, and everything is in order.
What could be the cause of this? What other tests might help determine the cause?
Thanks in advance.