Graves’ disease patient guide

Graves’ disease is an autoimmune condition in which the immune system produces antibodies that overstimulate the thyroid gland, leading to an overactive thyroid (hyperthyroidism). It is the most common cause of hyperthyroidism overall. It can also affect the eyes and, less commonly, the skin.

It is caused by the immune system mistakenly producing antibodies (TSH receptor antibodies) that stimulate the thyroid gland to overproduce thyroid hormone. The exact trigger is not fully understood, but genetic predisposition, other autoimmune conditions, smoking, and stress are recognised contributing factors. It is more common in women and often develops between young and middle adulthood.

Common symptoms include weight loss despite a normal or increased appetite, a fast or irregular heartbeat, tremor, anxiety, heat intolerance and sweating, and sometimes a visible goitre. Eye symptoms such as bulging, dryness, or double vision (Graves’ eye disease) can also occur. Symptoms often develop gradually over weeks to months.

If untreated, severe hyperthyroidism can lead to serious heart rhythm problems, bone thinning, and rarely a dangerous crisis called thyroid storm. With appropriate treatment, most people achieve good control of thyroid hormone levels and symptoms. Regular monitoring reduces the risk of these more serious complications.

There is a genetic component, and having a family history of Graves’ disease or other autoimmune thyroid conditions increases your own risk. It is not inherited in a simple, predictable pattern, but rather reflects a combination of inherited susceptibility and environmental triggers. Other autoimmune conditions may also run in affected families.

Treatment options include anti-thyroid medication to reduce hormone production, radioactive iodine to shrink the overactive thyroid tissue, or surgery to remove part or all of the thyroid gland. The right choice depends on factors including age, severity, eye involvement, and personal preference. Beta-blockers are often used alongside these treatments for quick symptom relief.

Some people go into long-term remission after a course of anti-thyroid medication, particularly if treated for twelve to eighteen months, while others need more definitive treatment such as radioactive iodine or surgery. Once the thyroid is treated with radioactive iodine or surgery, most people go on to have an underactive thyroid needing lifelong hormone replacement, which is straightforward to manage. Long-term monitoring of thyroid function is needed regardless of which treatment path is chosen.

Graves’ disease causes an overactive thyroid through stimulating antibodies, while Hashimoto’s thyroiditis causes an underactive thyroid through antibodies that damage thyroid tissue over time. Both are autoimmune thyroid conditions and can occasionally occur in the same person or family. Blood tests measuring specific antibodies and thyroid hormone levels distinguish between the two.

See a doctor if you develop symptoms such as unexplained weight loss, a racing heart, tremor, or eye changes like bulging or double vision, so thyroid function can be checked. A private endocrinology assessment with blood tests can typically be arranged within about two weeks, compared with potentially longer NHS waits for routine referral. Eye symptoms in particular should be assessed promptly, as Graves’ eye disease can progress if not monitored.