Hormone Imbalance Symptoms in Women: Causes, Tests and Next Steps

Hormones are chemical messengers that glands such as the thyroid, ovaries, pituitary and adrenals release into your blood to control metabolism, periods, mood, sleep and more. A hormone imbalance simply means you have too much or too little of one or more of them, according to Cleveland Clinic. Some imbalances are temporary, such as the shifts of puberty, pregnancy or perimenopause, while others are long-term conditions that need treatment.

This guide groups hormone imbalance symptoms in women by their most likely cause, so you can see which patterns tend to travel together. However, it is not a self-diagnosis tool. Instead, use it to prepare for a better conversation with your doctor, and to know which symptoms deserve a prompt appointment.

What counts as a hormone imbalance?

A hormone imbalance is a measurable excess or shortage of a hormone that causes symptoms or health problems. In practice, doctors rarely diagnose a vague “imbalance.” Instead, they look for a specific condition, such as an underactive thyroid or PCOS, because that is what guides treatment.

Cleveland Clinic lists several broad causes. First, normal life stages such as puberty, pregnancy and menopause bring large shifts. Second, stress, certain medicines and steroid use can cause temporary changes. Third, autoimmune diseases such as Hashimoto’s disease and Graves’ disease can attack hormone-producing glands. Finally, benign growths on glands like the pituitary can raise or lower hormone output.

Hormone imbalance symptoms in women at a glance

The table below links common symptoms to the conditions that most often cause them. Remember that many of these symptoms also have non-hormonal explanations, listed in the last column.

Symptom	Possible hormone-related causes	Also consider
Irregular, skipped or very heavy periods	Thyroid disease, PCOS, perimenopause, high prolactin	Pregnancy, fibroids, birth control changes
Tiredness that does not improve with rest	Underactive thyroid, Cushing’s syndrome	Poor sleep, anemia, depression, medicines
Weight gain, especially around the waist	Underactive thyroid, PCOS, Cushing’s syndrome	Diet, activity, sleep, medicines
Unexplained weight loss, racing heart, shaky hands	Overactive thyroid	Anxiety, other medical conditions
Acne, oily skin or extra facial and body hair	PCOS (high androgens), Cushing’s syndrome	Some medicines
Hair thinning or shedding	Thyroid disease, PCOS, after childbirth, menopause	Stress, illness, crash diets, anemia, medicines
Hot flashes and night sweats	Perimenopause, overactive thyroid	Some medicines
Low sex drive or vaginal dryness	Perimenopause, high prolactin	Relationship stress, depression, medicines
Milky nipple discharge when not breastfeeding	High prolactin (prolactinoma, some medicines)	Nipple stimulation, chest wall irritation
Severe mood changes the week before your period	PMDD	Depression, anxiety, thyroid disease
Feeling cold all the time	Underactive thyroid	Low body weight, anemia

How to track hormone imbalance symptoms in women

Is it your thyroid? Underactive and overactive signs

Thyroid disease is one of the most common hormone problems in women. The thyroid is a small gland in your neck that sets the pace of your metabolism. According to the federal Office on Women’s Health, one in eight women will develop a thyroid problem during her lifetime, and women have higher rates than men.

Underactive thyroid (hypothyroidism)

Hypothyroidism means the thyroid makes too little hormone, so body processes slow down. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) lists fatigue, weight gain, feeling unusually cold, joint and muscle aches, dry skin, thinning hair, heavy or irregular periods, fertility problems, a slow heart rate and depression. Nearly 5 out of 100 Americans ages 12 and older have it, although most cases are mild.

Importantly, symptoms often develop slowly over months or years, so they are easy to dismiss. NIDDK also notes that a diagnosis cannot be based on symptoms alone; blood tests are needed.

Overactive thyroid (hyperthyroidism)

Hyperthyroidism means the thyroid makes too much hormone. In this case, NIDDK lists weight loss despite a bigger appetite, a rapid or irregular heartbeat, nervousness, shaky hands, sweating, fatigue, frequent bowel movements and a swollen neck (goiter). About 1 in 100 Americans ages 12 and older have it, and it is more common in women and in people who were pregnant within the past six months.

After pregnancy: postpartum thyroiditis

Postpartum thyroiditis is inflammation of the thyroid after giving birth, and it affects about 10% of women, per the Office on Women’s Health. It often goes unnoticed because the symptoms resemble the “baby blues.” Typically, an overactive phase starts one to four months after delivery, followed by an underactive phase around four to eight months. Most women’s thyroid returns to normal within 12 to 18 months.

Thyroid problems also affect periods and fertility. For example, too much or too little thyroid hormone can make periods lighter, heavier or irregular, and an underactive thyroid can raise prolactin, which may stop ovulation.

PCOS: irregular periods, acne and extra hair

Polycystic ovary syndrome (PCOS) is a hormone condition in which the ovaries make higher-than-usual levels of androgens, often called “male” hormones, which disrupts ovulation. It affects about 1 in 10 women of childbearing age, according to the Office on Women’s Health, and it is a common cause of infertility.

The National Institute of Child Health and Human Development (NICHD) lists these signs:

• Missed, irregular or very heavy periods
• Extra hair on the face, chest, belly or upper thighs
• Severe, late-onset or persistent acne that does not respond well to usual treatments
• Oily skin and patches of thick, dark, velvety skin in body creases
• Weight gain or trouble losing weight, especially around the waist
• Trouble getting pregnant

Can hormone imbalance cause weight gain?

Yes, several hormone conditions can contribute to weight gain, including PCOS, an underactive thyroid and Cushing’s syndrome. With PCOS in particular, insulin resistance plays a big role: NICHD says more than half of women with PCOS have insulin resistance. As a result, the CDC notes that more than half of women with PCOS develop type 2 diabetes by age 40, so regular diabetes screening matters.

There is no single test for PCOS. According to NICHD, doctors usually look for two of three features: irregular or absent ovulation, signs or blood levels of high androgens, and many small follicles on an ovarian ultrasound. Meanwhile, they rule out look-alikes such as thyroid disease first.

Perimenopause: the natural shift that starts in your 40s

Perimenopause is the transition before menopause, when estrogen and progesterone levels rise and fall unevenly. According to Cleveland Clinic, it usually starts in the mid-40s, but it can begin as early as the mid-30s or as late as the mid-50s. On average, it lasts about four years, though it can stretch to eight.

Signs of hormonal imbalance in women in their 30s and 40s

For many women in this age range, perimenopause is the main reason periods and sleep start to change. Cleveland Clinic lists these common signs:

• Irregular, skipped, heavier or lighter periods
• Hot flashes and night sweats
• Trouble sleeping
• Irritability, low mood or mood swings
• Lower sex drive and vaginal dryness
• Needing to urinate more urgently

Menopause itself is confirmed after 12 months in a row without a period, and it usually happens between about ages 45 and 55, per MedlinePlus. However, perimenopause does not mean you can no longer get pregnant. Cleveland Clinic advises using birth control until your provider says it is safe to stop, and a pregnancy test is worth taking if a period is late.

Interestingly, hormone blood tests are not usually needed to diagnose perimenopause. Because levels swing so much from day to day, Cleveland Clinic says a single result can be misleading; doctors rely mostly on your age, symptoms and history. If you are under 40, though, early changes deserve a fuller workup. Our guide to perimenopause in your mid-30s covers what else can mimic it.

High prolactin: missed periods and nipple discharge

Prolactin is a pituitary hormone that triggers milk production. When levels are high outside of pregnancy and breastfeeding, it can interfere with ovulation. According to NIDDK, a prolactinoma, which is a usually benign pituitary tumor, is the most common type of pituitary tumor, and women are more likely than men to develop one.

In women, NIDDK lists these symptoms of a prolactinoma:

• Irregular or absent periods
• Trouble getting pregnant
• Milky discharge from the breasts when not breastfeeding
• Lower interest in sex
• Pain during sex from vaginal dryness

Notably, a tumor is not the only cause. Some antipsychotics, certain blood pressure and anti-nausea medicines and opioid pain relievers can raise prolactin, as can kidney disease and an underactive thyroid. Even a stressful blood draw, exercise or a meal can cause a small, short-lived rise. For that reason, doctors may repeat an abnormal result before ordering an MRI.

Cortisol: Cushing’s syndrome vs the “adrenal fatigue” myth

Cortisol is the main stress hormone made by the adrenal glands, which sit on top of the kidneys. Genuinely high cortisol over a long period causes Cushing’s syndrome. According to NIDDK, its most common cause is long-term, high-dose use of steroid medicines such as prednisone; cases caused by the body itself are rare.

Signs of Cushing’s syndrome include weight gain with thin arms and legs, a round face, a fatty hump between the shoulders, easy bruising, wide purple stretch marks and weak muscles. Women may also notice extra facial and body hair and irregular or stopped periods. It affects about three times as many women as men, most often between ages 30 and 50.

What about adrenal fatigue?

Adrenal fatigue is a popular wellness label for tiredness supposedly caused by “worn-out” adrenal glands. However, the Endocrine Society, the main professional group for hormone specialists, says no scientific proof supports it as a true medical condition, and that saliva tests sold to diagnose it are not based on scientific facts. Moreover, it warns that adrenal supplements may be untested and, if they contain hormones you do not need, could stop your own adrenal glands from working.

In other words, if you feel exhausted and stressed, the useful question is what is actually behind it: sleep, mood, anemia, thyroid function or workload. Our guides on reducing stress and spotting burnout are a better starting point than a cortisol kit.

PMS or PMDD? When mood swings follow your cycle

Premenstrual dysphoric disorder (PMDD) is a severe form of premenstrual symptoms marked by depression, irritability and tension in the week before your period, easing within a few days after bleeding starts. According to MedlinePlus, symptoms can include anxiety, panic attacks, anger that affects others, sadness or hopelessness, trouble concentrating, sleep problems and food cravings, along with bloating and breast tenderness.

The exact cause is not known, although hormone changes across the menstrual cycle seem to play a role. Notably, no lab test can diagnose PMDD. Instead, doctors rule out other conditions, including thyroid disease, and ask you to keep a daily symptom diary for a few cycles.

Treatment options to discuss with a doctor include lifestyle changes, cognitive behavioral therapy, certain antidepressants (SSRIs) and some birth control pills. By contrast, MedlinePlus notes that most studies have not found vitamin B6, calcium or magnesium helpful.

What else can look like a hormone problem?

Many symptoms blamed on hormones turn out to have other causes, so a good evaluation looks wider than hormone levels. For example, hair shedding is often temporary telogen effluvium, a pause in hair growth that, per MedlinePlus, can start weeks to months after a fever, surgery, childbirth, major stress or a crash diet and usually eases over six to eight months.

Similarly, MedlinePlus lists birth control pills, beta-blockers, some antidepressants and retinoids among medicines that can cause hair loss. Anemia, thyroid disease and autoimmune conditions are also on that list.

Can hormone imbalance cause anxiety or fatigue?

Yes. An overactive thyroid can cause nervousness and a racing heart, while an underactive thyroid, Cushing’s syndrome and perimenopause sleep disruption can all leave you drained. Still, depression, anxiety disorders, iron deficiency, sleep apnea and simply not sleeping enough are common causes too. Our guide on why you might always feel tired walks through those checks, and our sleep guide covers habits that help.

What tests check for hormone imbalance in women?

There is no single “hormone panel” that checks everything. Instead, your doctor chooses tests based on your symptoms, age and where you are in your cycle. Blood tests are the main tool, as Cleveland Clinic explains, because hormones travel in the bloodstream.

Test	What it checks	When a doctor may order it
TSH (thyroid-stimulating hormone)	How well your thyroid is working	Fatigue, weight change, period changes, feeling cold or hot
T4 and T3	Thyroid hormone levels	If TSH is abnormal
Thyroid antibodies	Autoimmune thyroid disease (Hashimoto’s, Graves’)	To find the cause of a thyroid problem
Pregnancy test (hCG)	Pregnancy	Any missed or late period
Prolactin	Prolactin level	Missed periods, nipple discharge, fertility problems
Androgens (such as testosterone)	Male-type hormone levels	Suspected PCOS: acne, extra hair, irregular periods
Blood sugar and cholesterol tests	Diabetes risk and heart health	Diagnosed or suspected PCOS
FSH, LH and estradiol	Ovarian hormone signals	Sometimes for early menopause or fertility questions
Urine, late-night saliva or suppression tests for cortisol	Excess cortisol	Suspected Cushing’s syndrome

The TSH test is the usual starting point for thyroid symptoms. If the result is abnormal, MedlinePlus says your provider will probably order T4, T3 or antibody tests to learn more. For Cushing’s syndrome, NIDDK says doctors usually run two different cortisol tests, because a single reading is not enough.

Are at-home hormone tests worth it?

At-home kits can measure some hormones, but a number on its own rarely gives a diagnosis. Several hormones swing across the day or the menstrual cycle, and perimenopause levels can change from one week to the next. As a result, a single at-home reading can falsely reassure or worry you. In addition, saliva tests marketed for adrenal fatigue are not considered scientifically valid by the Endocrine Society.

When should you see a doctor?

Book an appointment if any hormone imbalance symptoms in women described here last more than a few weeks, keep coming back or affect your daily life. In particular, these signs deserve a prompt visit, based on guidance from NIDDK, MedlinePlus and the Office on Women’s Health:

• Periods that stop or become very irregular when you are not pregnant, or new very heavy bleeding
• Any vaginal bleeding after menopause
• Milky nipple discharge when you are not breastfeeding
• A fast or irregular heartbeat, shaky hands or unexplained weight loss
• A swelling at the front of your neck
• Rapid hair loss, bald patches or hair loss along with acne, facial hair or period changes
• Easy bruising, wide purple stretch marks or new muscle weakness
• Trouble getting pregnant
• Low mood or anxiety that interferes with work, relationships or sleep

What the research actually says about popular hormone claims

Social media is full of hormone advice, and some of it overstates the evidence. Here is how several common claims hold up against official health sources.

Related health guides

• Perimenopause at 35: Early Signs, Causes and When to See a Doctor
• Cycle Syncing: What the Science Says About Workouts and Diet
• Why Am I Always Tired? Common Causes and When to See a Doctor
• Supplements for Women Over 30: What You Actually Need
• How to Sleep Better: 12 Evidence-Based Tips for Busy Adults
• How to Lower Cortisol: A Calm Morning Routine Backed by Science

Frequently asked questions

By Elizabeth Brown, health and wellness writer. Sources: NIH (NIDDK, NICHD), MedlinePlus, CDC, FDA, the Office on Women’s Health, Cleveland Clinic and the Endocrine Society. Last reviewed for accuracy: October 21, 2026.