Thyroid Symptoms in Women: What to Watch For

The thyroid is a small, butterfly-shaped gland in the front of the neck. Its hormones control how the body uses energy and affect breathing, heart rate, weight, digestion, and mood. That is why problems with its function produce vague complaints that are easy to dismiss as fatigue.

What the thyroid does and why its disorders are noticeable

The gland sits in the neck below the larynx, in front of the trachea, and consists of two lobes and an isthmus. In an adult it weighs on average 12–25 g. The gland's cells produce thyroxine (T4) and triiodothyronine (T3), as well as calcitonin, which is involved in calcium metabolism.

Diseases vary: goiter (enlargement of the gland), hyperthyroidism (more hormones than needed), hypothyroidism (fewer hormones than needed), nodules, cancer, thyroiditis (inflammation and swelling). One thing is common to all: thyroid hormones affect almost every organ, so complaints come from the heart, weight, digestion, and mood. What to remember: thyroid disorders look like a set of "ordinary" complaints from different systems.

Signs of reduced thyroid function

In hypothyroidism, symptoms are mild and easy to miss; they develop slowly and worsen over time. Common complaints:

• marked fatigue;
• feeling cold and weight gain;
• constipation, difficulty concentrating and with mental clarity;
• low mood or depression;
• dry skin, dry hair or hair loss, hoarse voice, irregular or heavy periods.

The most common cause is autoimmune Hashimoto's thyroiditis, in which the immune system attacks the gland; it is more common in women and usually begins at age 30–50. Less often, the cause is other thyroid diseases, surgery or radiation therapy to the neck, or treatment for overactive function. Risk is higher if relatives have had thyroid disease.

What to remember: slowly increasing fatigue, feeling cold, weight gain, and hair changes are a reason to check thyroid function.

Signs of increased thyroid function

Hyperthyroidism is a condition in which the gland produces more hormones than the body needs. A doctor establishes its signs through history-taking, examination of the neck, and blood tests for hormones: a feeling alone is not enough for a conclusion. What to remember: suspected overactive function is confirmed or ruled out only by testing.

Symptoms of thyroid inflammation and enlargement

Thyroiditis is inflammation and swelling of the thyroid, goiter is its enlargement, and nodules are lumps within it. The doctor examines the neck and checks whether the gland is enlarged. In women, postpartum thyroiditis—inflammation after childbirth—is distinguished separately.

What to remember: gland enlargement is detected by a doctor during examination of the neck.

Specifics of symptoms in women and men

Hashimoto's thyroiditis is more common in women. Among the complaints noted are irregular or heavy periods, and gland volume may fluctuate slightly with the cycle.

During pregnancy or when planning one, you should tell your doctor: without treatment, hypothyroidism increases the risk of preeclampsia, birth defects, preterm birth, and miscarriage, and treatment helps reduce these risks.

Men have no separate list of symptoms: the signs are the same, and the difference lies in gland size. What to remember: in women the disease affects the cycle, and pregnancy requires a separate conversation with a doctor.

How the thyroid is checked and when to see a doctor

You should see a doctor as soon as you suspect a problem: complaints in thyroid disease are common and may be caused by other factors, but they need to be checked. The doctor will ask about symptoms, about thyroid and autoimmune diseases in relatives, about recent pregnancy, examine the neck, and order blood tests for thyroid-stimulating hormone (TSH) and thyroxine (T4), and refer you to a specialist if needed.

Tests for T3 and thyroid antibodies, ultrasound, uptake scanning, and in some cases biopsy are also used. If hypothyroidism is left untreated, the risk of heart problems (coronary artery disease, heart failure) and bone problems (osteoporosis) increases.

What to remember: evaluation begins with a conversation with a doctor, examination of the neck, and tests for TSH and T4.

Thyroid symptoms on their own are not a reason to call an ambulance. Call 103 or 112 if a person with severe untreated hypothyroidism suddenly deteriorates: an extremely rare complication, myxedema coma, requires hospital treatment.

This material is for reference: it helps you prepare for a conversation with a doctor but does not replace a consultation.

This content is for reference and does not replace a doctor's consultation. Medical disclaimer