Patients with chronic pelvic pain, vulvodynia, endometriosis, or gynecologic malignancy may use THC, CBD, or a combination of both in an effort to treat their pain, research shows. A recent review in this area identified 16 studies published since 1990 that examined the use of cannabinoids for managing pain from gynecologic conditions. The authors found that patients who used cannabis tended to do so multiple times per week, used a variety of delivery methods, and a wide range of doses.