Fifth disease usually doesn't cause complications in most people.
If you are pregnant and think you may have been exposed to someone with the virus, tell your health care provider. Usually there's no problem. Most pregnant women are immune to the virus. Your doctor can test you to see if you are immune.
Women who are not immune usually only have mild symptoms. However, the virus can cause anemia in an unborn baby and even cause miscarriage. This is uncommon and occurs only in a small percentage of women, usually in the first half of pregnancy.
There's also a higher risk of complications in people with:
- A weak immune system, such as from cancer, leukemia, or HIV infection
- Certain blood problems such as sickle cell anemia
Fifth disease can cause severe anemia, which will need medical treatment.