Prince Erik had epilepsy and mild intellectual disability. His exact condition has not been published, but he may have had an injury at birth or been affected by his mother's strong pre-natal medication for pneumonia.
Erik, who was a prince, suffered from epilepsy and had mild cognitive issues. The exact nature of his condition is unknown, though it could be due to an injury during birth or exposure to potent prenatal medications used to treat his mother’s pneumonia.