Symptoms
Symptoms of pituitary tumors may be caused by the growth of the tumor itself or by hormones produced by the tumor. Tell your doctor if you experience any of the following symptoms.
Symptoms of Non-Functioning Tumors
Non-functioning pituitary tumors may grow large and inhibit the normal function of the pituitary gland or press on nearby structures such as the optic nerve. Tell your doctor if you experience any of the following symptoms.

Headache

Distortion of vision, especially loss of peripheral vision

Confusion or dizziness

Impotence / Reduced fertility

Menstrual changes
Symptoms of Functioning Tumors
Functioning pituitary tumors may cause the pituitary gland to produce too much of certain hormones. The symptoms of these tumors depend on the specific hormone being overproduced. Tell your doctor if you experience any of the following symptoms.