Hyperthyroidism (Overactive Thyroid)

Last Updated: July 3, 2026

Key Points

Thyroid gland produces too much hormone
About 10 times more common in women
Typically affects ages 20 to 40
Usually treatable with various options

Overview

Hyperthyroidism, also known as an overactive thyroid, happens when your thyroid gland makes too much thyroid hormone. This small, butterfly-shaped gland in your neck controls important body functions like heart rate and body temperature. Too much of these hormones can lead to unpleasant and potentially serious health issues. This condition can affect anyone, but it's much more common in women, especially between the ages of 20 and 40. Common causes include Graves' disease, thyroid nodules, and certain medications. If left untreated, it can lead to complications like eye problems or heart issues. Fortunately, hyperthyroidism is usually treatable. Your doctor will discuss the best treatment plan for you, which may involve medication, radioiodine therapy, or surgery to manage hormone levels and relieve symptoms.

Signs and Symptoms

Nervousness, anxiety, irritability
Mood swings
Difficulty sleeping
Persistent tiredness and weakness
Sensitivity to heat
Neck swelling (goitre)
Irregular or fast heart rate (palpitations)
Twitching or trembling
Unexplained weight loss

Things That Increase the Risk

Graves' disease (an autoimmune condition)
Thyroid nodules (lumps on the thyroid)
Taking certain medications like amiodarone
Being female
Age between 20 and 40 years

Diagnosis

Doctor asks about your symptoms
Blood test to check thyroid hormone levels
Further tests to find the cause if hyperthyroidism is confirmed

Treatment & Management

Medication to reduce thyroid hormone production
Radioiodine treatment to destroy thyroid cells
Surgery to remove part or all of the thyroid gland
Consultation with an endocrinologist (hormone specialist)

Prevention

Regular medical check-ups, especially if at risk
Monitoring for early symptoms if you have a family history
Discussing medication side effects with your doctor
Managing existing autoimmune conditions

Available Treatments

Explore our range of treatment options for Hyperthyroidism (Overactive Thyroid):