Menstruation, menses or menstrual periods involve hormonal and ovarian changes that cause PMS symptoms, ovulation, period pain and other period symptoms.
Cluster headaches produce severe pain on one side of the head. Sufferers typically experience a cluster of headaches followed by a period of no headaches.
Adrenalectomy is a surgical procedure to remove the hormone producing adrenal glands, near the kidneys. It is a treatment for benign and malignant tumours.
Gender identity disorder (also called gender dysphoria) is a feeling that one's sex is wrong. It is a mismatch between biological sex and sexual identity.