US Medical Term · conditions
Hypothyroidism
Hipotiroidismo
In 9 languages
| Language | Term |
|---|---|
| English | Hypothyroidism |
| Spanish (Español) | Hipotiroidismo |
| Chinese (中文) | 甲狀腺功能低下 |
| Korean (한국어) | 갑상선기능저하증 |
| Vietnamese (Tiếng Việt) | Suy giáp |
| Filipino (Tagalog) | Hypothyroidism |
| Portuguese (Português) | Hipotireoidismo |
| Thai (ภาษาไทย) | ภาวะไทรอยด์ทำงานน้อย |
| Japanese (日本語) | 甲状腺機能低下症 |
What it means
Hypothyroidism is a condition in which the thyroid gland, located in the front of the neck, does not produce enough thyroid hormone. Thyroid hormone regulates metabolism, which is how the body uses energy. When levels are too low, body processes slow down. Symptoms include fatigue, weight gain, feeling cold, dry skin, hair loss, constipation, and depression. It is diagnosed with a blood test measuring TSH levels. The most common cause is an autoimmune condition called Hashimoto's disease. Treatment is a daily oral medication called levothyroxine that replaces the missing hormone, and most people feel much better once the dose is properly adjusted.
How to say it
Sentences a patient might use with a doctor, nurse, pharmacist, or insurer:
I have hypothyroidism and take levothyroxine every morning on an empty stomach.
Tengo hipotiroidismo y tomo levotiroxina cada mañana con el estómago vacío.
I have been feeling very fatigued lately and want my thyroid levels rechecked.
Me he sentido muy cansado últimamente y quiero que me revisen los niveles de tiroides.
My generic thyroid medication was changed at the pharmacy and I want to confirm it is the same dose.
Mi medicamento genérico para la tiroides fue cambiado en la farmacia y quiero confirmar que es la misma dosis.
Where you'll see it
Related ICD-10-CM category
E03 Other hypothyroidismRelated terms
Sources
Last reviewed: September 2026