Thyroid, hormonal & endocrine care

Thyroid Disorders
& Thyroid Hormonal Problems

The thyroid is a small, butterfly-shaped gland located in the front of the neck, but it plays an important role in regulating many functions of the body. It produces thyroid hormones, mainly thyroxine (T4) and triiodothyronine (T3), which influence metabolism, body temperature, heart rate, energy levels, digestion, growth and development. Thyroid hormones are particularly important for normal brain development in babies and children and for healthy pregnancy. Thyroid disorders are common in India and can affect people of all ages, including newborn babies, children, young adults, pregnant women and older people. Some thyroid conditions develop gradually and produce subtle symptoms, while others cause noticeable changes in weight, energy, heartbeat, menstrual cycles or neck appearance. Early identification and appropriate treatment can help restore normal thyroid function and prevent complications.

Not all thyroid disorders are the same, and an abnormal thyroid blood test does not always mean lifelong treatment is necessary. Hypothyroidism occurs when the thyroid gland does not produce enough hormones. It may cause tiredness, weight gain, constipation, dry skin, hair loss, increased sensitivity to cold and menstrual disturbances. Hashimoto thyroiditis, an autoimmune condition in which the immune system attacks the thyroid gland, is a common cause of hypothyroidism. Other causes include iodine deficiency, previous thyroid surgery, radioactive iodine treatment, certain medicines and thyroid inflammation. Some patients have only mildly elevated TSH with normal free T4, called subclinical hypothyroidism. Not everyone with this finding requires immediate thyroid hormone treatment. The decision depends on the degree and persistence of TSH elevation, symptoms, age, pregnancy status and other clinical factors.

An overactive thyroid gland, called hyperthyroidism, produces excessive thyroid hormones and can cause very different symptoms. Patients may experience weight loss despite normal or increased appetite, excessive sweating, heat intolerance, palpitations, tremors, anxiety, frequent bowel movements and difficulty sleeping. Graves’ disease, an autoimmune condition that stimulates excessive thyroid hormone production, is an important cause. Other causes include toxic thyroid nodules and multinodular goitre. Thyroiditis, or inflammation of the thyroid gland, can also release stored thyroid hormones into the blood, temporarily producing symptoms of thyrotoxicosis. It is important to distinguish these conditions because the treatment is different. Graves’ disease and toxic nodules may require antithyroid medicines, radioactive iodine or surgery, whereas many forms of thyroiditis require supportive care rather than antithyroid medicines.

Thyroid swelling or nodules do not automatically indicate thyroid cancer. A thyroid nodule is a lump or localised growth within the thyroid gland. Some people notice swelling in the neck, while others discover nodules incidentally during ultrasound, CT or MRI examinations. Thyroid enlargement is called a goitre and may occur with normal thyroid hormone levels, hypothyroidism or hyperthyroidism. Most thyroid nodules are benign, but selected nodules require further evaluation to exclude cancer. Thyroid ultrasound helps assess the size, structure and suspicious features of nodules, often using risk classification systems such as TI-RADS. Depending on ultrasound findings, nodule size and clinical risk factors, fine-needle aspiration cytology (FNAC) may be advised. Not every thyroid nodule needs a biopsy or surgery. Many benign nodules can be monitored safely, helping patients avoid unnecessary investigations and procedures.

Thyroid cancer is another important condition that requires individualised evaluation and treatment. The commonest form is papillary thyroid cancer, followed by follicular thyroid cancer. Less common types include medullary and anaplastic thyroid cancer. Many differentiated thyroid cancers have a favourable prognosis when appropriately treated. Depending on the size, type, extent and risk of the tumour, management may include thyroid surgery, selected use of radioactive iodine and long-term thyroid hormone treatment. Importantly, not every thyroid cancer requires complete removal of the thyroid gland or radioactive iodine therapy. In selected low-risk cases, limited surgery or carefully supervised active surveillance may be considered. Long-term follow-up may include neck ultrasound, thyroglobulin measurements and individualised TSH targets. The aim is to achieve effective cancer control while avoiding unnecessary treatment and its complications.

Thyroid disorders during pregnancy need special attention because thyroid hormones are essential for maternal health and fetal development. Women with known hypothyroidism may require changes in levothyroxine dosage during pregnancy, while those with hyperthyroidism need carefully selected treatment to protect both mother and baby. Thyroid function test results must be interpreted using appropriate pregnancy-related reference ranges and clinical context. The management of mild thyroid abnormalities differs from that of established thyroid hormone deficiency. Women planning pregnancy, undergoing infertility evaluation or experiencing recurrent pregnancy-related concerns may require thyroid assessment depending on their individual risk factors. After childbirth, some women develop postpartum thyroiditis, which may cause temporary hyperthyroidism followed by hypothyroidism. Appropriate testing and follow-up help distinguish temporary thyroid dysfunction from conditions requiring longer-term treatment.

Thyroid problems can also affect babies, children and adolescents. Congenital hypothyroidism is a condition in which a newborn has inadequate thyroid hormone production from birth. Early diagnosis through newborn screening and timely treatment are important for normal brain development and growth. Older children may develop autoimmune thyroid disorders, goitre, hypothyroidism or hyperthyroidism. Thyroid hormone deficiency can affect height gain, school performance, energy levels and pubertal development. Excess thyroid hormone may cause weight loss, rapid heartbeat, behavioural changes and difficulties with concentration. Thyroid nodules in children require careful evaluation because their assessment differs from that of adults. Identifying the underlying thyroid condition early supports normal growth, development and long-term health.

Thyroid disorders may also be associated with symptoms involving the eyes, heart, muscles, skin and reproductive system. Graves’ disease can sometimes cause thyroid eye disease, producing eye prominence, redness, swelling, double vision or, rarely, vision-threatening complications. Severe or prolonged thyroid hormone abnormalities can affect heart rhythm, cholesterol levels, bone strength, menstrual function and fertility. Some patients experience persistent symptoms despite apparently normal thyroid hormone levels, and these symptoms may require evaluation for other medical conditions rather than unnecessary increases in thyroid medication. Similarly, positive thyroid antibodies alone do not always mean that treatment is required. Careful interpretation of symptoms, thyroid function and associated investigations helps avoid both under-treatment and over-treatment.

Correct diagnosis is the foundation of effective thyroid treatment. Evaluation generally begins with a detailed history, examination and thyroid function tests such as TSH and free T4. Additional investigations may include free T3, thyroid antibodies such as anti-TPO or TSH receptor antibodies (TRAb), ultrasound or FNAC, depending on the suspected condition. Some patients with thyroid nodules or cancer require more specialised investigations. Treatment may include levothyroxine for hypothyroidism, antithyroid medicines for Graves’ disease, symptom-relieving medicines, radioactive iodine, surgery or observation. The duration of treatment varies considerably. Some patients require lifelong thyroid hormone replacement, while others have temporary conditions that improve with time. Regular monitoring helps ensure appropriate hormone levels and reduces the risk of complications.

Dr. Rajesh Moganti (MD, DM Endocrinology) provides comprehensive evaluation and personalised treatment of hypothyroidism, hyperthyroidism, Hashimoto thyroiditis, Graves’ disease, thyroid nodules, goitre, thyroid cancer and thyroid-related hormonal disorders at our Rajahmundry and Tanuku centres. Care also includes thyroid disorders during pregnancy, childhood thyroid diseases, thyroid eye disease and long-term follow-up after thyroid surgery or radioactive iodine treatment. The focus is on identifying the exact cause, interpreting investigations correctly, selecting appropriate evidence-based treatment and maintaining healthy thyroid function while avoiding unnecessary medicines, investigations and procedures.