Bleeding: There is a small risk of heavy bleeding (for example soaking through a sanitary pad every hour).
Infection: There is a small risk of infection. Symptoms include painful cramps, a high temperature and/or smelly discharge.
Cervical stenosis: There is a very small risk that the opening of the cervix will become narrowed due to scarring. This can cause painful periods, difficulty conceiving or the cervix not to open well during labour. This risk increases if you have been through menopause or have had a treatment on your cervix previously.
Treatment failure: Cryotherapy may only offer partial relief of the bleeding/discharge symptoms, or the positive effects may be temporary.