Postmenstrual syndrome
Postmenstrual mood symptoms are atypical. Postmenstrual syndrome is not listed in DSM-5 or formally recognized as a medical diagnosis. Peer-reviewed research or literature on the condition is scarce to nonexistent. However, it has been discussed by physicians in articles in the lay press. One gynecologist and reproductive endocrinologist estimated that approximately 10% of women experience significant physical and emotional symptoms postmenstruation.10 An internist and women’s health specialist suggested that the cause of postmenstrual syndrome might be a surge in levels of estrogen and testosterone and may be associated with insulin resistance and polycystic ovarian syndrome, while another possible contribution could be iron deficiency caused by loss of blood from menstruation.11
TREATMENT Recommending an oral contraceptive
Ms. C’s psychiatrist does not prescribe an SSRI because he is concerned it would destabilize her BD II. The patient also had negative experiences in her past 2 trials of SSRIs.
Because the psychiatrist believes it is prudent to optimize the dosages of a patient’s current medication before starting a new medication or intervention, he considers increasing Ms. C’s dosage of lurasidone or pregabalin. The rationale for optimizing Ms. C’s current medication regimen is that greater overall mood stability would likely result in less severe postmenstrual mood symptoms. However, Ms. C does not want to increase her dosage of either medication because she is concerned about adverse effects.
Ms. C’s psychiatrist discusses the case with 2 gynecologist/obstetrician colleagues. One suggests the patient try a progesterone-only oral contraceptive and the other suggests a trial of Prometrium (a progesterone capsule used to treat endometrial hyperplasia and secondary amenorrhea). Both suggestions are based on the theory that Ms. C may be sensitive to levels of progesterone, which are low during the follicular phase and rise after ovulation; neither recommendation is evidence-based. A low level of allopregnanolone may lead to less GABAergic activity and consequently greater mood dysregulation. Some women are particularly sensitive to low levels of allopregnanolone in the follicular phase, which might lead to postmenstrual mood symptoms. Additionally, Ms. C’s previous treatment with a combined estrogen/progestin oral contraceptive may have decreased her level of allopregnanolone.12 Ultimately, Ms. C’s psychiatrist suggests that she take a progesterone-only oral contraceptive.
The author’s observations
Guidance on how to treat Ms. C’s postmenstrual symptoms came from research on how to treat PMDD in patients who have BD. In a review of managing PMDD in women with BD, Sepede et al13 presented a treatment algorithm that recommends a combined estrogen/progestin oral contraceptive as first-line treatment in euthymic patients who are already receiving an optimal dose of mood stabilizers. Sepede et al13 expressed caution about using SSRIs due to the risk of inducing mood changes, but recommended SSRIs for patients with comorbid PMDD and BD who experience a depressive episode.
Another question is which type of oral contraceptive is most effective for treating PMDD. The combined oral contraceptive drospirenone/ethinyl estradiol has the most evidence for efficacy.14 Combined oral contraceptives carry risks of venous thromboembolism, hypertension, stroke, migraines, and liver complications, and are possibly associated with certain types of cancer, such as breast and cervical cancer.15 Their use is contraindicated in patients with a history of these conditions and for women age >35 who smoke ≥15 cigarettes/d.
The limited research that has examined the efficacy of progestin-only oral contraceptives for treating PMDD has been inconclusive.16 However, progesterone-only oral contraceptives are associated with less overall risk than combined oral contraceptives, and many women opt to use progesterone-only oral contraceptives due to concerns about possible adverse effects of the combined formulations. A substantial drawback of progesterone-only oral contraceptives is they must be taken at the same time every day, and if a dose is taken late, these agents may lose their efficacy in preventing pregnancy (and a backup birth control method must be used17). Additionally, drospirenone, a progestin that is a component of many oral contraceptives, has antimineralocorticoid properties and is contraindicated in patients with kidney or adrenal gland insufficiency or liver disease. As was the case when Ms. C initially took a combined contraceptive, hormonal contraceptives can sometimes cause mood dysregulation.
Continue to: OUTCOME Improved symptoms