Progesterone is a hormone that supports menstruation and pregnancy. It typically rises during pregnancy and while using some birth control medications. Low levels can affect menstruation and fertility ...

I recently saw a 27-year-old woman who presented with an erythematous rash over her entire face and frontal scalp. She reported that since having her Norplant removed 1 year ago she had had the same ...

Did you know your body is full of chemical messengers that help regulate your various organs and body systems? There are at least 50 such chemicals, called hormones, in the human body. Their levels ...