Understanding Adenomyosis: Symptoms, Causes, Diagnosis and Treatment

16 September, 2026

Understanding Adenomyosis: Symptoms, Causes, Diagnosis and Treatment

Adenomyosis is a condition in which tissue similar to the lining of the uterus grows into the muscular wall of the uterus. This can cause the uterus to become enlarged and may lead to painful or unusually heavy periods. Some women may have mild symptoms or no symptoms at all, while others experience discomfort that affects their daily activities.

Understanding the symptoms, possible causes, diagnosis, and treatment options can help women recognize when medical evaluation may be necessary.

What Is Adenomyosis?

Normally, the endometrium lines the inside of the uterus. In adenomyosis, this tissue grows within the muscular wall of the uterus. The misplaced tissue continues to respond to hormonal changes during the menstrual cycle, which can contribute to inflammation, swelling, pain, and heavier bleeding.

Adenomyosis can occur alongside other conditions such as uterine fibroids or endometriosis, which can sometimes make diagnosis more challenging.

Symptoms of Adenomyosis

Some women with adenomyosis may not experience noticeable symptoms. When symptoms occur, they can range from mild to severe.

Common symptoms include:

  • Heavy or prolonged menstrual bleeding

  • Severe menstrual cramps

  • Pelvic pain or pressure

  • Pain that may continue beyond the menstrual period

  • Pain during sexual intercourse

  • Tenderness or fullness in the lower abdomen

Heavy menstrual bleeding may also contribute to anemia over time, which can cause tiredness and weakness.

If period pain becomes severe, bleeding is unusually heavy, or symptoms begin interfering with normal activities, consulting a gynaecologist is recommended.

What Causes Adenomyosis?

The exact cause of adenomyosis is not fully understood. Researchers have proposed several possible explanations for how endometrial tissue may enter the muscular wall of the uterus.

Possible factors include:

  • Previous uterine surgery: Procedures such as a Caesarean section, fibroid surgery, or D&C may be associated with adenomyosis.

  • Childbirth: Changes or inflammation in the uterus following childbirth may play a role.

  • Developmental factors: Some theories suggest that endometrial tissue may become embedded in the uterine muscle during development.

  • Hormonal influence: Adenomyosis appears to be influenced by oestrogen, which helps explain why symptoms commonly occur during the reproductive years.

Having one or more risk factors does not necessarily mean that a woman will develop adenomyosis.

How Is Adenomyosis Diagnosed?

Diagnosing adenomyosis can sometimes be challenging because its symptoms can resemble other gynaecological conditions, including fibroids and endometriosis.

A doctor may begin with a detailed discussion about menstrual patterns, pain, previous pregnancies, surgeries, and other symptoms. A pelvic examination may also help identify an enlarged or tender uterus.

Depending on the findings, diagnostic tests may include:

Ultrasound

A transvaginal ultrasound can provide images of the uterus and surrounding pelvic organs and may show changes associated with adenomyosis.

MRI

Magnetic resonance imaging can provide more detailed images of the uterus and may help distinguish adenomyosis from other conditions when ultrasound findings are unclear.

In some situations, additional tests may be recommended to rule out other causes of abnormal bleeding. A definitive diagnosis may sometimes only be confirmed by examining the uterus after hysterectomy.

Treatment Options for Adenomyosis

Treatment depends on the severity of symptoms, age, overall health, and whether pregnancy is desired. Not every woman with adenomyosis requires the same treatment.

Medication

Pain-relieving medicines may help reduce menstrual cramps and discomfort. Hormonal treatments, including certain contraceptive methods and progestin-containing options, may help control heavy bleeding and period-related pain.

Hormonal Intrauterine Devices

A hormone-releasing intrauterine device may be recommended for some women to help reduce heavy menstrual bleeding and related symptoms.

Surgical Treatment

When symptoms are severe and do not improve with other treatments, surgery may be considered. For women who have completed childbearing and have significant symptoms, hysterectomy may be an option. Removal of the uterus eliminates adenomyosis.

The appropriate treatment should always be decided after discussing symptoms, reproductive plans, and individual health needs with a gynaecologist.

When Should You See a Doctor?

Persistent pelvic pain, very painful periods, or unusually heavy or prolonged bleeding should not simply be considered a normal part of menstruation. Medical evaluation can help identify whether adenomyosis or another gynaecological condition is responsible.

Early assessment can also help prevent complications associated with prolonged heavy bleeding, such as anemia.

Final Thoughts

Adenomyosis can cause painful periods, heavy bleeding, pelvic discomfort, and other symptoms that may affect quality of life. Although its exact cause remains uncertain, modern imaging such as ultrasound and MRI can help doctors evaluate the condition and distinguish it from other uterine problems.

At Jaipur Doorbeen Hospital, patients can receive personalized evaluation and guidance for concerns such as painful periods, heavy bleeding, and pelvic discomfort. Understanding the underlying cause is an important first step toward choosing the right treatment and managing symptoms effectively.