Hyperthyroidism is the opposite of an underactive thyroid: instead of slowing down, the whole body speeds up. Although less common than hypothyroidism, its symptoms can be distressing and dangerous to the heart and bones if neglected, and they are often mistaken for stress. The ClinicsJo Editorial Team explains the disease and the treatment options available in Jordan.
What Is Hyperthyroidism?
It is a condition in which the thyroid produces too much T3 and T4, raising the body's metabolic rate excessively. The result is a fast heart rate, weight loss, and nervousness — even when the person eats more than usual. Every body process runs in overdrive.
Causes
- Graves disease: the most common cause, an autoimmune condition where antibodies stimulate the gland, sometimes with bulging eyes.
- Toxic nodules: one or more nodules that produce hormone independently.
- Thyroiditis: can temporarily release stored hormone.
- Excess iodine or an overdose of thyroid medication.
Symptoms
- Palpitations and a rapid, sometimes irregular pulse.
- Weight loss despite increased appetite.
- Anxiety, irritability, and difficulty sleeping.
- Hand tremor and excessive sweating.
- Heat intolerance and frequent bowel movements.
- Muscle weakness, especially in the thighs.
- Bulging, red eyes (especially in Graves disease).
- An enlarged thyroid (neck swelling).
Complications of Untreated Disease
Neglecting hyperthyroidism can lead to atrial fibrillation and heart failure, osteoporosis from accelerated calcium loss, and sight-threatening eye disease in Graves. Rarely, a life-threatening "thyroid storm" can occur and requires emergency hospital care.
How Is It Diagnosed?
- TSH test: very low in hyperthyroidism.
- Free T3 and T4: elevated.
- TRAb antibodies: confirm Graves disease.
- Thyroid scan and ultrasound: to identify the type of problem.
Treatment
There are three main options; the doctor chooses based on the case, age, and pregnancy plans:
- Antithyroid drugs such as carbimazole, taken for 12–18 months.
- Radioactive iodine, taken by mouth to gradually shrink the overactive gland.
- Surgery to remove part or all of the gland in cases of large goiter or suspicious nodules.
Beta-blockers are also used to quickly control palpitations, tremor, and anxiety until the main treatment takes effect.
Medical tip: do not dismiss palpitations and rapid weight loss as mere stress. They can signal an overactive thyroid that directly affects heart and bone health — the earlier the diagnosis, the easier the treatment.
When to See a Doctor
See an endocrinologist promptly if you have ongoing palpitations with weight loss, tremor, and excessive sweating, or notice neck swelling or a change in the appearance of your eyes.
Frequently Asked Questions
Can hyperthyroidism be fully cured?
Yes — many Graves cases remit after drug therapy, and others are permanently resolved with radioactive iodine or surgery.
Does it affect pregnancy?
Yes, and it needs careful monitoring to choose a safe medication, so inform your doctor when planning pregnancy.
Do stimulants worsen it?
Stimulants do not cause the disease but worsen palpitations, anxiety, and insomnia, so reduce them during treatment.
For evaluation and treatment, book an appointment with an endocrinologist on ClinicsJo.
