General Physician

Thyroid Disorders

Under- or over-active thyroid affects energy, weight and mood — and is very treatable.

Written by Dr. Sumanth G Medically reviewed by Dr. Sumanth G Last reviewed: 01 Aug 2026

What is Thyroid Disorders?

The thyroid gland controls metabolism. When it is underactive (hypothyroidism) or overactive (hyperthyroidism), it affects energy, weight, mood and heart rate. Thyroid disorders are common and usually straightforward to treat.

Who may need evaluation

  • People with tiredness, weight or mood changes
  • Those with a family history of thyroid disease
  • Anyone with abnormal thyroid results

Symptoms & signs

  • Tiredness, weight gain, feeling cold (underactive)
  • Restlessness, weight loss, fast heartbeat (overactive)
  • Hair, skin or mood changes
  • Neck swelling in some cases

Causes

  • Autoimmune thyroid conditions
  • Iodine and other factors
  • Sometimes after certain treatments

Risk factors

  • Family history of thyroid disease
  • Other autoimmune conditions
  • Being female, and older age

When to seek care

  • Persistent tiredness, weight or mood changes
  • Abnormal thyroid test results
  • Neck swelling

Diagnosis & evaluation

  • Thyroid function blood tests
  • Assessment of symptoms
  • Further tests where indicated

Treatment & management

  • Thyroid hormone replacement or other treatment
  • Dose monitoring and adjustment
  • Long-term follow-up

What to expect at your visit

  • A clear explanation of your results
  • Simple, effective treatment
  • Regular review

A note on health information: Content on this website is for general awareness and does not replace a consultation. For diagnosis or treatment, please book an appointment with the relevant specialist at Parijatha Healthcare Clinic. In an emergency, call your nearest hospital immediately.

Questions

Thyroid Disorders — FAQs

Is thyroid treatment lifelong?

Underactive thyroid often needs long-term treatment, but it's simple and well-monitored. Some overactive thyroid conditions are treated for a defined period.

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