Hashimoto Disease: Symptoms, Causes, Diagnosis & Treatment

Written by Medicover Team and Medically Reviewed by Dr Shrutika Kamble , General Medicine

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Hashimoto disease, also known as Hashimoto's thyroiditis, is an autoimmune disorder in which the immune system attacks the thyroid gland, leading to chronic inflammation and an underactive thyroid (hypothyroidism). Common symptoms include fatigue, weight gain, cold intolerance, dry skin, constipation, and depression. Early diagnosis and appropriate thyroid hormone replacement therapy help restore normal hormone levels, relieve symptoms, and prevent complications.

What Are the Symptoms of Hashimoto Disease?

The symptoms of Hashimoto disease usually develop gradually and become more noticeable as thyroid hormone levels decline.

Persistent fatigue and weakness
Weight gain despite no change in diet
Sensitivity to cold
Dry skin and brittle hair
Hair loss
Constipation
Depression or low mood
Slow heart rate
Puffy face or swelling around the eyes
Hoarseness of the voice
Memory problems or difficulty concentrating
Enlarged thyroid gland (goiter)
Heavy or irregular menstrual periods
Muscle aches and joint pain

What are the Common Causes of Hashimoto Disease?

Hashimoto's is an autoimmune thyroid disease. The body's immune system produces antibodies that target thyroid cells, assuming them to be bacteria, viruses or a foreign body. It reduces the ability of the thyroid gland to produce sufficient thyroid hormones.

The disease onset may be due to:

Genetic factors
Environmental factors such as stress or radiation exposure.
Excessive iodine

When to See a Doctor for Hashimoto Disease?

Consult an endocrinologist or general medicine if you experience persistent fatigue, unexplained weight gain, cold intolerance, neck swelling, or other symptoms of hypothyroidism. Early diagnosis and treatment can help prevent complications and improve quality of life.

You should see a doctor if you have:

Persistent tiredness or unexplained weight gain
Enlargement or swelling in the neck
Dry skin, hair loss, or constipation
Heavy menstrual periods or fertility concerns

Get medical help immediately if:

Severe drowsiness or confusion
Difficulty breathing or swallowing due to a large goiter
Chest pain or severe slowing of the heart rate
Symptoms of myxedema coma, such as extreme weakness, low body temperature, or loss of consciousness

These could indicate serious complications requiring urgent medical care.

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How is Hashimoto Disease Diagnosed?

The doctor will ask for the patient's medical history and perform a physical examination and laboratory testing to diagnose the symptoms.

Thyroid Profile Test : Thyroid profile test Your doctor will recommend blood tests to find out if hypothyroidism is the main cause of the symptoms. They may include
TSH Test: The pituitary gland produces Thyroid stimulating hormone (TSH). When the pituitary notices low levels of thyroid hormones in the blood, it sends TSH to the thyroid gland to stimulate an increase in thyroid hormone production. High blood TSH levels signify hypothyroidism.
Total T4 Free T4 and Total T3 Test: Triiodothyronine (T3) and thyroxine (T4) are thyroid hormones. Low levels of T4 or free t4 and T3 tests confirm the findings of the TSH test and point to a thyroid problem.
Thyroid Antibody Test : The antibody test for Hashimoto's thyroiditis measures Anti TPO( thyroid peroxidase) +/- Anti TG( thyroglobulin) antibodies. Presence of antibodies may indicate underlying autoimmune hypothyroidism

What Are the Treatment Options for Hashimoto Disease?

To treat hypothyroidism, the majority of Hashimoto's patients take medication. In the case of normal hormone levels, no treatment is needed but regular TSH test and thyroid hormone tests done.

T-4 hormone replacement therapy

Hashimoto's disease-related hypothyroidism is treated with a synthetic hormone called levothyroxine. This synthetic hormone functions like the T-4 hormone produced naturally by the thyroid gland.

The treatment aims to restore and maintain sufficient T-4 hormone levels and improve hypothyroidism symptoms.

The thyroiditis disease symptoms will reappear if thyroid medication is stopped in between.

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What are the Risk Factors for Hashimoto Disease?

The risk factors of Hashimoto's disease include

Sex : Women are more vulnerable to getting Hashimoto's disease, maybe related to the sex hormones.
Middle Age : Hashimoto's disease is more commonly observed in middle age groups, but it can occur at any age as well.
Other Autoimmune Diseases : Other autoimmune disorders like type 1 diabetes, rheumatoid arthritis, or lupus may raise the risk of developing Hashimoto's thyroiditis.
Genetics and Family History : If thyroid disorders or other autoimmune diseases run in the family, it increases the chances of Hashimoto's thyroiditis in a person.
Excessive Iodine Intake : Extreme iodine intake in the diet may act as a trigger factor among individuals already at risk for Hashimoto's disease.
High Radiation Exposure : People exposed to high environmental radiation levels are more vulnerable to Hashimoto

What is the Recovery Process for Hashimoto Disease?

Hashimoto disease is a chronic condition that requires ongoing management.

Improvement with hormone replacement therapy
Regular monitoring of thyroid function
Symptom control with consistent medication use
Long-term lifestyle management
Prevention of complications through follow-up care

Frequently Asked Questions

1. What are the symptoms of Hashimoto Disease?

Symptoms usually develop gradually and may include fatigue, weight gain, sensitivity to cold, dry skin, constipation, depression, slowed heart rate, muscle weakness, joint pain, puffy face, hoarseness, hair thinning, heavy or irregular menstrual periods, memory problems, and an enlarged thyroid gland (goiter).

2. How is Hashimoto Disease diagnosed?

Diagnosis is based on a medical history, physical examination, blood tests to measure thyroid-stimulating hormone (TSH) and thyroid hormones (free T4), and thyroid antibody tests, particularly anti-thyroid peroxidase (anti-TPO) antibodies. A thyroid ultrasound may be performed if a goiter or thyroid nodules are present.

3. Who is at risk of developing Hashimoto Disease?

Hashimoto Disease is more common in women, especially between 30 and 50 years of age. People with a family history of thyroid disease, other autoimmune disorders (such as type 1 diabetes or celiac disease), Down syndrome, Turner syndrome, or previous radiation exposure are at higher risk.

4. How is Hashimoto Disease treated?

Treatment depends on thyroid function. People with hypothyroidism are typically treated with levothyroxine, a synthetic thyroid hormone that restores normal hormone levels. Regular blood tests are needed to adjust the dosage and monitor thyroid function.

5. Can Hashimoto Disease be cured?

There is currently no cure for Hashimoto Disease. However, thyroid hormone replacement therapy effectively controls symptoms in most people, allowing them to lead healthy, active lives with regular medical follow-up.

6. What complications can occur with Hashimoto Disease?

If left untreated, Hashimoto Disease can lead to goiter, severe hypothyroidism, high cholesterol, heart disease, infertility, pregnancy complications, peripheral neuropathy, depression, and, rarely, myxedema coma, a life-threatening medical emergency.