Final answer:
The submucosal fibroid is the most common fibroid to cause uterine bleeding due to its location under the lining of the uterine cavity. Treatment for symptomatic fibroids may include medication or surgery. Endometriosis, related but different from fibroids, also causes pelvic pain and uterine bleeding, treatable with surgery and medication.
Step-by-step explanation:
The most common cause of uterine bleeding related to fibroids is a submucosal fibroid. Submucosal fibroids form just under the lining of the uterine cavity and can distort the uterine cavity or protrude into it. Because of their location adjacent to the endometrial lining, they are more likely to cause abnormal bleeding compared to subserosal fibroids, which are on the outer surface of the uterus, or intramural fibroids, which are found within the muscular wall of the uterus. Treatment options for fibroids causing symptoms like heavy bleeding may include medication, surgical removal of the fibroids, or in severe cases, a hysterectomy.
Endometriosis, while not a type of fibroid, is another condition that can cause pelvic pain and abnormal uterine bleeding. It involves endometrial tissue growing outside the uterus and is generally treated with surgery, medication, or both.