Obtain detailed personal and family history focusing on diet, eating disorders, exercise, weight, sleep, stressors, mood, menstrual pattern, fractures, substance abuse, and familial endocrine/reproductive disorders
STEP 1 — Gather Information
Collect personal history: diet, eating disorders, exercise/athletic training, attitudes (perfectionism, high need for social approval), ambitions/expectations, weight fluctuations, sleep patterns, stressors, mood, menstrual pattern, fractures, substance abuse. Also obtain family history of eating disorders and reproductive endocrine disorders. Action: Document all findings in the chart.
STEP 2 — Rule In / Rule Out
Is there a history of weight loss, excessive exercise, psychosocial stress, or eating disorder and absence of red flags for organic disease (e.g., galactorrhea, persistent headaches, vision changes, abnormal thyroid symptoms)?
- Yes: Proceed to consider FHA as likely.
- No: Consider alternative diagnoses (e.g., pregnancy, thyroid disease, hyperprolactinemia, outflow tract anomaly) and investigate accordingly.
Action: Binary decision point.
STEP 3 — Classify or Stratify
Count risk factors from personal/family history (diet abnormality, eating disorder, excessive exercise, weight fluctuation, stress, mood disturbance, menstrual abnormality, fracture history, substance abuse, family history of eating/reproductive disorders).
- ≥3 factors: High suspicion of FHA.
- 1-2 factors: Moderate suspicion.
- 0 factors: Low suspicion; broaden differential.
Action: Assign suspicion level to guide next steps.
STEP 4 — Decide
If suspicion is high or moderate, proceed to exclude pregnancy (urine hCG) and obtain baseline labs (TSH, free T4, prolactin, LH, FSH, estradiol) and consider progestin challenge.
If suspicion is low, pursue evaluation for other causes of amenorrhea per standard workup.
Action: Initiate appropriate diagnostic pathway.
Clinical Guardrails / Mimics / Pitfalls
Do not diagnose FHA without first excluding pregnancy, thyroid dysfunction, hyperprolactinemia, and anatomic outflow tract abnormalities. Do not overlook subtle eating disorders or medication‑induced amenorrhea (e.g., antipsychotics, opioids). Do not assume normal weight excludes FHA; stress‑related FHA can occur at any weight. Avoid attributing amenorrhea solely to exercise without assessing dietary intake and psychological stressors.
Concrete Clinical Example
A 19‑year‑old collegiate distance runner reports 4 months of amenorrhea. She describes increased training mileage, caloric restriction to maintain low weight, insomnia, and perfectionistic tendencies. Family history is negative for endocrine or eating disorders. No galactorrhea, headaches, or visual changes. History reveals ≥3 risk factors (exercise, diet, weight, stress, mood), indicating high suspicion for FHA. Next steps: pregnancy test, serum TSH, free T4, prolactin, LH, FSH, estradiol, and progestin challenge.
Source: Functional Hypothalamic Amenorrhea: An Endocrine Society Clinical Practice Guideline, Endocrine Society, 2017, https://doi.org/10.1210/jc.2017-00131
1---2name: endo-fha-personal-family-history3description: This skill guides clinicians to obtain a detailed personal and family history focusing on diet, eating disorders, exercise, weight, sleep, stressors, mood, menstrual pattern, fractures, substance abuse, and familial endocrine/reproductive disorders when evaluating suspected functional hypothalamic amenorrhea. Use when clinicians state they need to know about her exercise routine, diet, and family history of eating disorders, or when they ask about weight fluctuations, sleep, and stressors, or review family history for reproductive or endocrine disorders.4---56# Obtain detailed personal and family history focusing on diet, eating disorders, exercise, weight, sleep, stressors, mood, menstrual pattern, fractures, substance abuse, and familial endocrine/reproductive disorders78## STEP 1 — Gather Information9Collect personal history: diet, eating disorders, exercise/athletic training, attitudes (perfectionism, high need for social approval), ambitions/expectations, weight fluctuations, sleep patterns, stressors, mood, menstrual pattern, fractures, substance abuse. Also obtain family history of eating disorders and reproductive endocrine disorders. **Action:** Document all findings in the chart.1011## STEP 2 — Rule In / Rule Out12Is there a history of weight loss, excessive exercise, psychosocial stress, or eating disorder **and** absence of red flags for organic disease (e.g., galactorrhea, persistent headaches, vision changes, abnormal thyroid symptoms)? 13- **Yes:** Proceed to consider FHA as likely. 14- **No:** Consider alternative diagnoses (e.g., pregnancy, thyroid disease, hyperprolactinemia, outflow tract anomaly) and investigate accordingly. 15**Action:** Binary decision point.1617## STEP 3 — Classify or Stratify18Count risk factors from personal/family history (diet abnormality, eating disorder, excessive exercise, weight fluctuation, stress, mood disturbance, menstrual abnormality, fracture history, substance abuse, family history of eating/reproductive disorders). 19- **≥3 factors:** High suspicion of FHA. 20- **1-2 factors:** Moderate suspicion. 21- **0 factors:** Low suspicion; broaden differential. 22**Action:** Assign suspicion level to guide next steps.2324## STEP 4 — Decide25If suspicion is high or moderate, proceed to exclude pregnancy (urine hCG) and obtain baseline labs (TSH, free T4, prolactin, LH, FSH, estradiol) and consider progestin challenge. 26If suspicion is low, pursue evaluation for other causes of amenorrhea per standard workup. 27**Action:** Initiate appropriate diagnostic pathway.2829## Clinical Guardrails / Mimics / Pitfalls30Do not diagnose FHA without first excluding pregnancy, thyroid dysfunction, hyperprolactinemia, and anatomic outflow tract abnormalities. Do not overlook subtle eating disorders or medication‑induced amenorrhea (e.g., antipsychotics, opioids). Do not assume normal weight excludes FHA; stress‑related FHA can occur at any weight. Avoid attributing amenorrhea solely to exercise without assessing dietary intake and psychological stressors.3132## Concrete Clinical Example33A 19‑year‑old collegiate distance runner reports 4 months of amenorrhea. She describes increased training mileage, caloric restriction to maintain low weight, insomnia, and perfectionistic tendencies. Family history is negative for endocrine or eating disorders. No galactorrhea, headaches, or visual changes. History reveals ≥3 risk factors (exercise, diet, weight, stress, mood), indicating high suspicion for FHA. Next steps: pregnancy test, serum TSH, free T4, prolactin, LH, FSH, estradiol, and progestin challenge.3435**Source:** Functional Hypothalamic Amenorrhea: An Endocrine Society Clinical Practice Guideline, Endocrine Society, 2017, https://doi.org/10.1210/jc.2017-00131
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