Symptoms of high prolactin pituitary tumor are mainly manifested as follows: 1. headache, which is mainly caused by local tissue pulling due to pituitary tumor growth or increased intracranial pressure due to pituitary tumor. 2. visual acuity and visual field disorders, which are mainly caused by the growth of pituitary tumor affecting the blood supply to the optic nerve or by the growth of pituitary tumor compressing the optic nerve. 3. If the pituitary stalk or hypothalamus is compressed, hypotension, thermoregulation disorders, water-electrolyte disorders, respiratory rhythm disorders, etc. may occur. If the interventricular foramen and aqueduct are involved, it can lead to increased intracranial pressure and serious disorders of consciousness. 4. Symptoms of endocrine hormone disorders. In men, it can be manifested as headache, hypogonadism, infertility, etc.; in women, it can be manifested as overflow of breast, amenorrhea, infertility, etc.