Perimenopause 101 for Primary Care NPs: Symptoms, Work-Up, and First-Line Treatment Options (Including HRT)

Perimenopause is finally getting the attention it deserves, and more patients are walking in asking about hormone therapy by name. For the right candidate, HRT is safe and genuinely effective for symptom relief. Here's how I work it up and start it in primary care.

What is perimenopause?

It's the months to years before menopause (the final menstrual period), when ovarian estrogen and progesterone decline and turn erratic.

Common symptoms: hot flashes and night sweats, sleep problems, mood changes, vaginal dryness, lower libido, weight gain or redistribution, and cycle changes in length, flow, and frequency.

Average duration is 4 to 6 years and can stretch to about 10. Average menopause age is around 51 (range about 48 to 58). PMDD can flare during this window.

Do we need hormone labs?

Usually no. Ovarian hormones swing wildly in perimenopause, so a "normal" value doesn't rule it out.

When to draw labs, and keep it targeted:

• To rule out other causes of symptoms or bleeding changes: TSH, prolactin, and a pregnancy test (she's still ovulating).
• When you're considering other diagnoses or the picture is atypical.

Tell patients this directly: the symptoms can be perimenopause even if the labs read normal.

Irregular or heavy bleeding: don't skip the work-up

Bleeding changes are expected, but heavy or prolonged bleeding still needs evaluation:

• Pregnancy test, CBC, TSH plus or minus prolactin
• Pelvic ultrasound
• Endometrial sampling if she's 45 or older, or under 45 with risk factors or persistent AUB

Who might benefit from HRT?

The best candidates are symptomatic, generally under 60 and within about 10 years of menopause, with no contraindications. HRT is first-line for vasomotor symptoms and treats genitourinary syndrome of menopause (GSM).

Avoid, or get specialist input, if there's a history of breast cancer or estrogen-dependent malignancy, unexplained vaginal bleeding, active or prior VTE/PE, stroke or MI, severe liver disease, or pregnancy.

Two rules to keep straight:

• Uterus present: add a progestogen with systemic estrogen to protect the endometrium.
• No uterus: estrogen alone.

First-line HRT options with practical starter doses

Systemic estrogen (pick one and tailor to symptoms and coverage):

• Transdermal estradiol patch: 0.025 to 0.05 mg/day, change twice weekly
• Oral estradiol: 0.5 to 1 mg PO daily
• Topical gels or sprays: per product (nice for dose-flexing)

Endometrial protection (if uterus present):

• Micronized progesterone 100 mg PO nightly, continuous, OR
• Micronized progesterone 200 mg PO nightly for 12 to 14 days/month (cyclic regimen)

GSM (vaginal dryness, dyspareunia):

• Vaginal estradiol tablet 10 mcg twice weekly
• Estradiol ring or low-dose cream

Local vaginal estrogen has minimal systemic absorption, so no progestogen is needed with it.

How to start: pick one systemic estrogen plus the appropriate progesterone if she has a uterus. Follow up at 4 to 8 weeks to check symptom control and adjust.

Counsel honestly: HRT isn't for primary prevention of CVD or dementia. It does improve quality of life and helps bone while she's on it.

Non-hormonal options (when HRT isn't wanted or is contraindicated)

• SSRIs/SNRIs: paroxetine (including 7.5 mg), escitalopram, venlafaxine
• Gabapentin (helpful at night)
• Clonidine (less used because of side effects)
• Fezolinetant (a non-hormonal NK3 receptor antagonist for vasomotor symptoms)

Plus the basics: sleep hygiene and CBT-I, exercise, less alcohol, and temperature layering.

Don't forget contraception

Perimenopausal women can still conceive. Keep contraception going until:

• 12 months of amenorrhea if she's 50 or older, or 24 months if under 50.

Options that can also help symptoms or bleeding:

• Levonorgestrel IUD (bleeding control plus endometrial protection if you're adding systemic estrogen)
• Progestin-only pill, implant, or copper IUD
• Combined hormonal contraception can help cycles and vasomotor symptoms if there are no CHC contraindications

For the full menu and the missed-dose rules, see the non-COC contraception guide and, for the combined pill, prescribing combined oral contraception.

Safety checklist before starting HRT

• BP, BMI, and migraine with aura?
• Personal history: breast cancer, VTE/PE, stroke/MI, liver disease, unexplained bleeding
• Family history of early thrombosis or estrogen-dependent cancers
• Med list (enzyme inducers, anticoagulants, and so on)
• Age-appropriate screening up to date (breast, cervical, colon)

Sample prescriptions (copy, paste, and adjust per formulary)

Transdermal estrogen plus nightly progesterone (continuous):

Estradiol transdermal patch 0.0375 mg/day, change twice weekly.
Sig: Apply 1 patch to lower abdomen/buttocks; rotate sites.
Disp: 8 patches; RF: 2.
Note: May change per insurance formulary.

Micronized progesterone 100 mg capsule.
Sig: 1 capsule PO nightly.
Disp: 30; RF: 2.

Vaginal estrogen for GSM:

Estradiol vaginal tablet 10 mcg.
Sig: Insert 1 tablet vaginally twice weekly.
Disp: 8; RF: 2.

Pearls that actually help

• Transdermal estradiol carries lower VTE risk than oral. Nice for patients with metabolic risk.
• Start low and titrate. The right dose is the lowest one that controls her symptoms.
• Bleeding on continuous therapy in the first 3 to 6 months often settles. Persistent or heavy bleeding warrants evaluation.
• Reassess 6 to 12 weeks after starting, then at least annually, or sooner if symptoms or risks change.
• Education beats lab-chasing. Normal hormones do not exclude perimenopause.

EMR SmartPhrase (paste and tweak)

PERIMENOPAUSE – EVAL & PLAN
Sxs: [hot flashes/night sweats/sleep/mood/GSM/irregular bleeding].
Other causes screened: TSH [ ], prolactin [ ], pregnancy test [ ] if indicated.
AUB red flags? [ ] none [ ] heavy/prolonged → pelvic US ± endometrial sampling per criteria.

Shared decision on HRT:
• Candidate (age <60, within ~10 yrs of menopause, no contraindications). Risks/benefits reviewed.
• Start estradiol [patch 0.0375–0.05 mg/day twice weekly OR oral 0.5–1 mg daily].
• If uterus present: micronized progesterone [100 mg QHS continuous OR 200 mg QHS × 12–14 days/month].
• GSM: add low-dose vaginal estrogen PRN.

Non-hormonal alternatives discussed (SSRI/SNRI, gabapentin, fezolinetant), lifestyle (CBT-I, exercise, alcohol reduction).
Contraception needed until menopause confirmed; options reviewed [LNG IUD/POP/etc.].
Follow-up in 6–12 weeks to assess symptom relief & adjust. Return earlier for heavy bleeding, chest pain, neuro deficits, or new focal breast symptoms.

Frequently asked questions

Do I need to confirm perimenopause with FSH or estradiol levels before treating?
No. Levels bounce around too much to be reliable in perimenopause, and a normal result doesn't exclude it. Diagnose on the clinical picture and use labs only to rule out other causes like thyroid disease or pregnancy.

Patch or pill for systemic estrogen?
Transdermal estradiol carries a lower VTE risk than oral, so it's a strong default, especially for patients with metabolic or clotting risk. Oral is reasonable when cost or preference points that way.

She still has her uterus. Can I give estrogen alone?
No. Unopposed systemic estrogen raises endometrial cancer risk. Add a progestogen, either micronized progesterone 100 mg nightly continuous or 200 mg nightly for 12 to 14 days a month.

When can she stop contraception?
After 12 months of amenorrhea if she's 50 or older, or 24 months if she's under 50. Until then she can still get pregnant, even with irregular cycles.

If your patient also needs reliable contraception through the transition, pair this with the non-COC contraception guide, and for the candidate-versus-avoid call on hormone therapy, see HRT in perimenopause. If you want the starter doses and the safety checklist on one page at your desk, the Clinical Desk Reference ($37) keeps it close, and the Primary Care Clinical Mastery Program (AANP-accredited) covers the broader primary care workup.

If diabetes makes up a big part of your panel, the Diabetes Management course is separately AANP-accredited.

Education only. Use clinical judgment and your local guidelines.

Written by Allison Sowders, MSN, APRN, FNP-BC, a practicing primary care nurse practitioner and founder of Nurse Practitioner Mentor. Reviewed July 2026.