Cranial deformation or macrocephaly (enlargement of the head), particularly in children[4] Cysts in the suprasellar region in children have presented as bobbing and nodding of the head called bobble-head doll syndrome.[4] Cysts in the left middle cranial fossa have been associated with ADHD in a study on affected children.[5] Headaches.[3] A patient experiencing a headache does not necessarily have an arachnoid cyst.