Thyroid Disorders

Thyroid Disorders

The thyroid is a small, butterfly-shaped gland at the base of the neck that produces hormones controlling how the body uses energy. When it produces too much or too little of these hormones, it can affect metabolism, heart rate, body temperature, weight, and mood — sometimes so gradually that the changes are mistaken for everyday stress or aging.

Thyroid hormones regulate nearly every organ system in the body, so even a small imbalance can have wide-ranging effects. Thyroid disorders are common, especially in women, and are often manageable once correctly diagnosed — but many cases go unnoticed for years because the symptoms build up slowly.

Hypothyroidism (Underactive Thyroid)

Occurs when the thyroid gland doesn't produce enough hormone, slowing down the body's metabolism. It's often caused by an autoimmune condition called Hashimoto's thyroiditis. Common signs include fatigue, unexplained weight gain, constipation, dry skin, hair thinning, feeling cold, and low mood.

Hyperthyroidism (Overactive Thyroid)

Occurs when the thyroid produces too much hormone, speeding up metabolism. It's frequently caused by Graves' disease. Common signs include unexplained weight loss, rapid or irregular heartbeat, anxiety or irritability, tremors, excessive sweating, and difficulty tolerating heat.

Thyroid Nodules & Goiter

Thyroid nodules are lumps that form within the thyroid gland; most are benign, but they need proper evaluation — through ultrasound and, if needed, a fine-needle aspiration biopsy — to rule out malignancy. A goiter refers to overall enlargement of the thyroid gland, which can occur with either an overactive, underactive, or normally functioning thyroid.

Signs and Symptoms to Watch For

Because thyroid symptoms overlap with many everyday complaints, it's worth getting tested if you notice:

Unexplained weight gain or weight loss
Persistent fatigue or low energy
Feeling unusually cold or unusually hot
Rapid or irregular heartbeat
Hair thinning or hair loss
Dry skin or brittle nails
Swelling at the front of the neck
Changes in menstrual cycle
Mood changes, anxiety, or low mood

Diagnosis & Treatment

Diagnosis typically starts with blood tests (TSH, T3, T4, and thyroid antibodies where relevant), along with a physical examination of the neck and, when needed, a thyroid ultrasound. Treatment depends on the specific condition: hypothyroidism is usually managed with daily thyroid hormone replacement, while hyperthyroidism may be treated with anti-thyroid medication, radioactive iodine therapy, or, in select cases, surgery. Regular follow-up blood tests help fine-tune the dosage and keep hormone levels stable over time.