Medical Management of Endometriosis
First-line medical therapy for endometriosis-related pain should be combined hormonal contraceptives (CHCs) or the 52mg levonorgestrel-releasing intrauterine system (LNG-IUS), with progestins (particularly dienogest) as the preferred option when contraception is not needed or CHCs are contraindicated. 1, 2, 3
First-Line Hormonal Therapies
The evidence strongly supports hormonal suppression as the cornerstone of medical management:
Combined hormonal contraceptives (CHCs) are recommended as first-line therapy for endometriosis-associated pelvic pain, with continuous dosing preferred over cyclic use when dysmenorrhea is prominent 2, 3
52mg levonorgestrel-releasing IUS is equally effective as first-line treatment and offers the advantage of long-acting reversible contraception 2, 3
Progestins are the preferred first-line option over CHCs due to their superior safety profile, particularly for long-term use 4
Dienogest specifically has the largest evidence base supporting its use as first-line medical therapy and can be used long-term if needed 4
Oral desogestrel microprogestative and etonogestrel-releasing implant serve as alternative progestin options 3
Second-Line Therapies
When first-line treatments fail or are not tolerated:
GnRH agonists are recommended for moderate-to-severe endometriosis-related pain, requiring a minimum of three months of therapy 1
Add-back therapy containing estrogen must be used in conjunction with GnRH agonists to prevent bone demineralization 3
GnRH agonists are NOT recommended as first-line therapy in adolescents due to the risk of bone demineralization 3
Danazol requires a minimum of six months for efficacy but is less commonly used due to androgenic side effects 1
Adjunctive Pain Management
Post-Surgical Medical Management
After surgical excision of endometriosis:
CHCs or 52mg LNG-IUS are recommended as first-line treatment when pregnancy is not desired to prevent pain recurrence 2, 3
CHCs specifically reduce the risk of endometrioma recurrence after surgery 3
GnRH agonists are NOT recommended for preventing endometrioma recurrence post-operatively 3
Approximately 44% of patients experience symptom recurrence within one year after surgery, making post-operative hormonal suppression critical 1
Important Caveats
Antigonadotrophic hormonal therapy should NOT be used in patients with endometriosis and infertility to increase chances of spontaneous pregnancy, including postoperatively 2
No currently available medical therapy completely eradicates endometriosis lesions—all treatments are suppressive rather than curative 1
Dietary supplements are NOT included in standard treatment protocols and should not replace established medical therapy 1
When Medical Management Fails
When pain persists despite optimal medical therapy, consider surgical excision, which provides significant pain relief during the first six months 1
Multidisciplinary team meetings are recommended for treatment failure, recurrence, or multiorgan involvement, involving physicians, surgeons, and other professionals 2
Physical therapies such as yoga, relaxation, or osteopathy can be offered to improve quality of life in patients with chronic pain 3