<s>[INST] <<SYS>> This is a medical question of type : symptoms <</SYS>> What are the symptoms of Pilocytic astrocytoma ? [/INST] What are the signs and symptoms of pilocytic astrocytoma?  People with pilocytic astrocytomas might experience symptoms including: headaches, nausea, vomiting, irritability, ataxia (uncoordinated movement or unsteady gait), and vision issues. These symptoms are associated with increased pressure within the skull resulting from the tumor or hydrocephalus. </s>