Thyroid disorders are common endocrine conditions that can affect energy, weight, heart rate, mood, digestion, menstrual cycles and many other aspects of daily health. The two broad patterns are hypothyroidism, when the body has too little thyroid hormone, and hyperthyroidism, when there is too much thyroid hormone.
In this guide, Dr. Moxit Shah, DM Endocrinology, explains common thyroid symptoms, causes, thyroid blood tests, treatment options and when you should consult an endocrinologist in Ahmedabad.
What is the thyroid gland?
The thyroid is a small butterfly-shaped gland at the front of the neck. It produces thyroid hormones, mainly thyroxine (T4) and triiodothyronine (T3), which influence how the body uses energy and affect many organs.
Common thyroid disorders
- Hypothyroidism: the thyroid does not produce enough hormone.
- Hyperthyroidism: the thyroid produces too much hormone.
- Hashimoto’s thyroiditis: an autoimmune condition that commonly causes hypothyroidism.
- Graves’ disease: an autoimmune condition that commonly causes hyperthyroidism.
- Thyroid nodules: lumps within the thyroid that may need ultrasound assessment and, in selected cases, biopsy.
- Goitre: enlargement of the thyroid gland.
- Thyroiditis: inflammation of the thyroid that can cause temporary changes in thyroid hormone levels.
Symptoms of hypothyroidism
When thyroid hormone levels are low, body processes may slow down. Symptoms can include:
- Tiredness or low energy
- Feeling unusually cold
- Dry skin
- Constipation
- Hair thinning or hair loss
- Difficulty concentrating or feeling mentally slowed
- Menstrual changes
- Low mood
- Weight gain or difficulty with Weight Loss
- Slow heart rate in some people
These symptoms are not specific to thyroid disease. A blood test is needed to confirm whether the thyroid is actually underactive. Read more about symptoms of thyroid disorders.
Symptoms of hyperthyroidism
When thyroid hormone levels are too high, body functions may speed up. Symptoms may include:
- Palpitations or a fast heartbeat
- Heat intolerance and increased sweating
- Hand tremors
- Anxiety, nervousness or irritability
- Unintentional weight loss despite normal or increased appetite
- Frequent bowel movements
- Difficulty sleeping
- Muscle weakness
- Menstrual changes
- Eye symptoms in some people with Graves’ disease
Symptoms alone cannot establish the diagnosis because several other conditions can cause similar complaints.
What causes thyroid problems?
Common causes of hypothyroidism
- Hashimoto’s thyroiditis
- Previous thyroid surgery
- Radioactive iodine treatment
- Some medicines
- Iodine deficiency or excess in particular circumstances
- Pituitary or hypothalamic disorders, which are less common
Common causes of hyperthyroidism
- Graves’ disease
- Toxic thyroid nodules or multinodular goitre
- Thyroiditis
- Excess thyroid hormone medication
- Excess iodine in susceptible individuals
Which thyroid tests are important?
TSH is usually the first blood test used to assess thyroid function. Depending on the result and clinical situation, doctors may check Free T4, T3 and thyroid antibodies.
| Test | What it helps assess |
|---|---|
| TSH | Initial assessment of thyroid function and monitoring of treatment |
| Free T4 | Available circulating thyroid hormone |
| T3 | Particularly useful in suspected hyperthyroidism |
| Anti-TPO antibodies | Can support diagnosis of autoimmune thyroid disease |
| TRAb/TSI | Can support diagnosis of Graves’ disease |
Thyroid test interpretation depends on the clinical situation, pregnancy status, medicines and other medical conditions. Read our detailed guide to TSH, Free T4 and T3.
When is a thyroid ultrasound needed?
Thyroid ultrasound is mainly used to evaluate a thyroid lump or nodule, assess the structure of the gland and identify features that may require further evaluation. It is not routinely required simply because a blood test shows an abnormal TSH.
If a nodule has suspicious ultrasound characteristics, an endocrinologist may recommend fine-needle aspiration (FNA) biopsy based on its size and appearance. Learn when a thyroid nodule may need ultrasound or biopsy.
How is hypothyroidism treated?
The standard treatment for established hypothyroidism is levothyroxine, a thyroid hormone replacement medicine. The appropriate dose is individualized and is monitored with blood tests.
Taking levothyroxine consistently and correctly is important because food, supplements and some medicines can interfere with absorption. Read how to take levothyroxine correctly.
How is hyperthyroidism treated?
Treatment depends on the cause, severity, age, symptoms and other medical conditions. Options can include:
- Antithyroid medicines
- Radioactive iodine in selected patients
- Surgery in selected situations
- Medicines such as beta blockers for symptom control when appropriate
For example, carbimazole may be used for some patients with an overactive thyroid. It requires appropriate medical supervision and monitoring. Read our guide to carbimazole safety and side effects.
Thyroid and Weight Loss
Hypothyroidism can contribute to weight gain, but thyroid dysfunction is not the only cause of weight changes. Once thyroid hormone levels are appropriately treated, additional factors such as food intake, physical activity, sleep, medicines and other metabolic conditions may still influence weight.
Thyroid treatment should therefore be individualized rather than using thyroid hormone solely as a Weight Loss medicine.
Thyroid disease and pregnancy
Thyroid function is particularly important before and during pregnancy. People with known thyroid disease who are planning pregnancy should discuss thyroid testing and medication requirements with their doctor. Pregnancy can change thyroid hormone requirements, so monitoring may be needed at specific stages.
Can thyroid disease be cured?
It depends on the underlying condition. Some thyroiditis conditions can resolve, while autoimmune hypothyroidism commonly requires long-term hormone replacement. Some causes of hyperthyroidism can be treated definitively with radioactive iodine or surgery, while others may be managed with medicines. The appropriate approach depends on the diagnosis.
When should you see an endocrinologist?
Consider an endocrinology consultation if you have persistent thyroid symptoms, repeatedly abnormal TSH or Free T4 results, a thyroid swelling or nodule, unexplained palpitations, known autoimmune thyroid disease, difficulty controlling thyroid levels, or thyroid disease during pregnancy.
Frequently asked questions
Is TSH enough to diagnose a thyroid problem?
TSH is usually the starting thyroid function test, but it is not sufficient in every situation. Free T4, T3, antibody tests or imaging may be appropriate depending on the clinical picture.
Can thyroid problems cause weight gain?
Yes. Hypothyroidism can contribute to weight gain, but weight change has multiple possible causes. Correct diagnosis and treatment are important before attributing weight gain to the thyroid.
Can thyroid problems cause hair fall?
Both hypothyroidism and hyperthyroidism can be associated with hair changes. Other causes of hair loss are also common, so thyroid testing should be interpreted in context.
Do all thyroid nodules require biopsy?
No. Many nodules do not require biopsy. The decision depends on ultrasound appearance, size and clinical risk factors.
Can I stop levothyroxine when my TSH becomes normal?
Do not stop thyroid hormone on your own. A normal TSH while taking levothyroxine often means the treatment is working. Whether treatment can ever be reduced or stopped depends on the original diagnosis and should be discussed with your doctor.
Thyroid specialist in Ahmedabad
If you are looking for an endocrinologist for thyroid evaluation in Ahmedabad, Dr. Moxit Shah, DM Endocrinology, provides consultation at Vishuddha Endocrine Clinic.
Vishuddha Endocrine Clinic
Elite Magnum, Bhuyangdev Cross Road, Memnagar/Ghatlodia, Ahmedabad
Phone: +91 99799 92797
Medical disclaimer
This article is for general educational purposes and does not replace an individual medical consultation. Thyroid test results and treatment decisions should be interpreted by a qualified healthcare professional based on your symptoms, examination, medical history and other relevant investigations.
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