Types of abortion include:
- Spontaneous abortion: a miscarriage
- Threatened abortion: vaginal bleeding in early pregnancy without miscarriage
- Elective abortion: a voluntary, surgical procedure to terminate a pregnancy
- Missed abortion: the fetus has died, but the cervix is closed and the pregnancy has not been expelled from the uterus
- Inevitable abortion: the cervix has opened, but the pregnancy has not yet been expelled from the uterus
- Incomplete abortion: a miscarriage has occurred, but the uterus still retains some of the products of conception.
- Habitual abortion: repeated miscarriages; typically more than 3 in a row
