Hashimotos thyroiditis

Overview

Hashimoto's thyroiditis is a condition where your immune system mistakenly attacks your thyroid gland. The thyroid is a small butterfly-shaped gland in your neck that makes hormones that control your metabolism — how your body uses energy. Over time, this attack can damage the thyroid and stop it from making enough thyroid hormone, leading to an underactive thyroid (hypothyroidism).

Yes, Hashimoto's thyroiditis is quite common. It is the leading cause of hypothyroidism in countries where people get enough iodine in their diet.

It can affect anyone, but it is much more common in women than in men. It often starts between the ages of 30 and 50, but it can happen at any age, including in children and older adults.

Symptoms

Common symptoms

• Fatigue
• Weight gain
• Feeling cold
• Dry skin
• Constipation
• Muscle aches
• Depression
• Memory problems
• Heavy or irregular periods

Symptoms in children

• Slower growth
• Delayed puberty
• Poor school performance
• Fatigue

Symptoms in older adults

• Memory problems
• Depression
• Heart failure
• Joint pain

Causes

Main causes

• The exact cause is not fully understood, but it is an autoimmune condition where the immune system makes antibodies that attack the thyroid.
• Genetics and environmental triggers like infections or stress may play a role.

Risk factors

• Being female
• Having a family history of autoimmune diseases
• Having another autoimmune condition (like type 1 diabetes or rheumatoid arthritis)
• Certain genetic factors

When to see a doctor

See a doctor urgently if:

• If you have difficulty breathing or swallowing due to a goiter.
• If you experience severe symptoms like confusion, very slow heartbeat, or extreme lethargy.

Book a routine appointment if:

• If you have ongoing symptoms of an underactive thyroid like fatigue, weight gain, feeling cold, or depression.
• If you notice a swelling in your neck.

Diagnosis

Your doctor will ask about your symptoms and medical history, and examine your neck. They will order blood tests to check your thyroid hormone levels and look for specific antibodies.

Tests that may be done

• TSH test (thyroid stimulating hormone)
• Free T4 test
• TPO antibody test (thyroid peroxidase antibodies)

What to expect at your appointment

The blood test is simple and quick. If antibodies are found, it confirms the autoimmune cause. Your doctor will explain the results and discuss treatment if needed.

Treatment

The main treatment for an underactive thyroid caused by Hashimoto's is a daily medicine that replaces the missing thyroid hormone. This treatment is safe and effective, and most people take it for life.

Self-care at home

• Take your thyroid medication as prescribed, usually on an empty stomach.
• Have regular blood tests to check your thyroid levels.
• Eat a balanced diet with enough iodine and selenium.
• Manage stress and get enough sleep.
• Avoid taking calcium or iron supplements at the same time as your thyroid medication (ask your doctor or pharmacist).

Medical treatments

Treatment involves taking a synthetic thyroid hormone (levothyroxine) daily. The dose is adjusted based on your blood test results. Your doctor will start with a low dose and increase slowly. Regular monitoring is important to make sure your levels are in the normal range. Do not change your dose without your doctor's advice.

When is surgery considered?

Surgery is rarely needed. It may be considered if the goiter is very large and causes trouble breathing or swallowing, or if there is a concern about thyroid cancer. Your doctor will discuss this if necessary.

Living with this condition

Living with Hashimoto's means taking a daily medication and having regular check-ups. With proper treatment, most people feel well and have few limitations. It is important to be consistent with your medication and follow your doctor's advice.

Lifestyle tips

• Take your medication every day at the same time.
• Keep a routine for meals and sleep.
• Manage stress with relaxation techniques.
• Stay active with moderate exercise.
• Avoid smoking.

Diet and exercise

A balanced diet with adequate iodine is important, but do not take iodine supplements unless your doctor advises. Selenium-rich foods like Brazil nuts, tuna, and eggs can be helpful. Regular exercise like walking, swimming, or yoga can boost energy and mood. Listen to your body and rest when needed.

Mental health and emotional wellbeing

Thyroid conditions can affect your mood and energy, leading to depression or anxiety. It is common to feel frustrated or tired. Talk to your doctor if you are struggling emotionally. Treatment often improves mental health, but some people may need additional support like counselling.

Prevention

There is no known way to prevent Hashimoto's thyroiditis because it is an autoimmune condition. However, early diagnosis and treatment can prevent complications.

Screening programmes

Routine screening is not recommended for everyone. But if you have a family history of thyroid disease or other autoimmune conditions, your doctor may suggest checking your thyroid levels.

Complications

If left untreated

• Severe hypothyroidism (myxedema) – a life-threatening condition.
• Goiter – enlargement of the thyroid that can cause breathing or swallowing problems.
• Heart problems – including enlarged heart and abnormal heart rhythm.
• Mental health issues – depression, slowed thinking.
• Infertility and pregnancy complications.

Long-term outlook

With treatment, the outlook is excellent. Most people with Hashimoto's live normal, healthy lives. It is a chronic condition that requires daily medication, but the treatment is simple and effective. Regular monitoring keeps you well. Remember, you are not alone – many people manage this condition successfully.

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