Headache (obstructive hydrocephalus) Hypersomnia Myxedema Postsurgical weight gain[6] Polydipsia Polyuria (diabetes insipidus) Vision loss (bitemporal hemianopia) Vomiting Often occurs after treatment Growth hormone (GH) insufficiency, caused by the reduction in GH production - symptoms include: Stunted growth and delayed puberty (in children) General fatigue, loss of muscle mass and tone (in adults) Pituitary insufficiency Often occurs to some degree because craniopharyngiomas develop in the area of the pituitary stalk, which can affect the function of the pituitary gland[7] Reduction in prolactin production is very uncommon and occurs with severe pituitary insufficiency. Large pituitary tumors can paradoxically elevate blood prolactin levels due to the "stalk effect". This elevation occurs as a result of the compression of the pituitary stalk, which interferes with the brain's control of prolactin production.