What Is Hashimoto’s Disease? Learn About Symptoms, Diagnosis and Treatment
February 16, 2026Hashimoto’s disease, also called Hashimoto’s thyroiditis, is an autoimmune condition in which the immune system mistakenly attacks the thyroid gland. Over time, this can reduce the thyroid’s ability to produce hormones, leading to hypothyroidism.
The thyroid plays a critical role in regulating metabolism, energy levels, body temperature, heart rate, and mood. When it is underactive, many body systems are affected.
Common Symptoms of Hashimoto’s
Symptoms often develop gradually and can vary widely from person to person. Common symptoms include:
- Fatigue
- Weight gain
- Cold sensitivity
- Dry skin or hair thinning
- Brain fog or memory issues
- Depression or anxiety
- Constipation
- Irregular menstrual cycles
- Neck discomfort or thyroid swelling
Note that these symptoms are common and overlap with symptoms of other conditions.
Frequently Asked Questions About Hashimoto’s
Hashimoto’s is one type of hypothyroidism. There are other causes of hypothyroidism as well.
Yes. Many people live full, active lives taking thyroid hormone replacement.
There is a genetic component. Having a family history of Hashimoto’s or other autoimmune disease increases risk.
If you have symptoms that you find concerning, it is worth speaking with a provider.
How Is Hashimoto’s Diagnosed?
Diagnosis typically includes:
- Blood tests to measure thyroid hormone levels
- Thyroid antibody testing
- Medical history and physical examination
How Is Hashimoto’s Treated?
Patients are treated with thyroid hormone replacement medication to restore normal hormone levels.
Blood work is used to monitor the treatment
Treatment plans are personalized and may need adjustment over time.
