The most common fibroid symptoms include:
The living tissue of the fibroid needs oxygen and nutrients to grow and repair itself, just like other cells in your body. When the fibroids grow too large or too quickly, the blood vessels supplying the fibroids are no longer able to provide enough sustenance to meet the needs of the fibroid. When this happens, the cells of the fibroid begin to die, causing severe pain and abdominal discomfort. This process is called degeneration.
More info: https://www.vivaeve.com/uterine-fibroids/fibroid-degeneration/