👉 Coronal aplasia is a rare genetic disorder characterized by the loss of the epiphysis of the skull, resulting in a small and irregularly shaped head. This condition affects the brain and can lead to difficulties with speech, vision, balance, and coordination. It's caused by mutations in the gene that codes for the epiphyseal plates, which are responsible for forming the skull bones. The disorder is typically associated with a family history of mental health issues such as schizophrenia or autism spectrum disorders