Causes & Symptoms
The causes of fibroids are unknown. They can occur at any age but mostly occur during childbearing years. Fibroids are affected by estrogen and progesterone, so hormone increases caused by pregnancy or medications containing estrogen (such as birth control pills) may cause them to grow, and they often shrink during menopause.
If fibroids are not causing symptoms, are small, or are found when a woman is nearing menopause, treatment may not be needed. Signs that treatment may be required include:
- Periods that are heavy or painful enough to cause anemia
- Bleeding between periods
- Uncertainty whether the growth is a fibroid or another type of tumor
- Fibroids grow rapidly
- Infertility
- Pelvic pain
- Pain during sex
- Frequent urination
- Abdominal bloating or enlargement
- Frequent urination or difficulty emptying the bladder
- Constipation
- Back or leg pain