eating disorder — eating disorders, such as anorexia nervosa, bulimia nervosa, and binge- eating disorder, involve serious problems with eating. This could include an extreme decrease of food or severe overeating, as well as feelings of distress and concern about body shape or weight.
ectopic pregnancy — a pregnancy that is not in the uterus. It happens when a fertilized egg settles and grows in a place other than the inner lining of the uterus. Most happen in the fallopian tube, but can happen in the ovary, cervix, or abdominal cavity.
electrocardiogram (ECG or EKG) — an external, noninvasive test that records the electrical activity of the heart.
electrolyte imbalance — when the amounts of sodium and potassium in the body become too much or too little.
embryo — a period during pregnancy where the baby has rapid growth, and the main external features begin to take form.
endometrial cancer — cancer that develops from the endometrium, or the inner lining of the uterus (womb).
endometrial hyperplasia — an abnormal overgrowth of the endometrium (the layer of cells that lines the uterus). There are four types of endometrial hyperplasia: simple endometrial hyperplasia, complex endometrial hyperplasia, simple endometrial hyperplasia with atypia, and complex endometrial hyperplasia with atypia. These differ in terms of how abnormal the cells are and how likely it is that the condition will become cancerous.
endometriosis — a condition in which tissue that normally lines the uterus grows in other areas of the body, usually inside the abdominal cavity, but acts as if it were inside the uterus. Blood shed monthly from the misplaced tissue has no place to go, and tissues surrounding the area of endometriosis may become inflamed or swollen. This can produce scar tissue. Symptoms include painful menstrual cramps that can be felt in the abdomen or lower back, or pain during or after sexual activity, irregular bleeding, and infertility.
endoscopy — a diagnostic procedure in which a thin, flexible tube is introduced through the mouth or rectum to view parts of the digestive tract.
engorgement — condition in which breasts become overly full of milk. Engorged breasts may feel swollen, hard, and painful. Engorgement can lead to blocked milk ducts.
epidural — a needle is inserted into the epidural space at the end of the spine, to inject medication to numb the lower body and reduce pain.
epilepsy — a physical disorder that involves recurrent seizures. It is caused by sudden changes in how the brain works.
episiotomy — a procedure where an incision is made in the perineum (area between the vagina and the anus) to make the vaginal opening larger in order to prevent the area from tearing during delivery.
erectile dysfunction — inability to get or maintain a penile erection for satisfactory sexual intercourse. Also called impotence.
erection — enlargement and hardening of the penis caused by increased blood flow into the penis and decreased blood flow out of it as a result of sexual excitement.
esophagus — tube that connects the throat with the stomach.
estrogen — a group of female hormones that are responsible for the development of breasts and other secondary sex characteristics in women. Estrogen is produced by the ovaries and other body tissues. Estrogen, along with progesterone, is important in preparing a woman's body for pregnancy.