Hypothyroidism

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Endocrine Clinical reference

Hypothyroidism

Hypothyroidism is thyroid hormone deficiency. Most common cause: Hashimoto thyroiditis (autoimmune). Symptoms: fatigue, cold intolerance, weight gain, constipation, bradycardia. Myxedema coma is rare but life-threatening.

hypothyroidism underactive thyroid Hashimoto thyroiditis myxedema
Terms
2
ICD-10
8
Evidence
4
Trials
0
Latest evidence

Latest evidence

Core official overview

What this condition is

What is hypothyroidism?Hypothyroidism, or underactive thyroid, happens when your thyroid gland doesn't make enough thyroid hormones to meet your body's needs.Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example,…

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Condition family & coding

Terms and documentation support

Condition matches & synonyms

Terms

Related diagnostic names, synonyms, and documentation wording that may appear in clinical references and charting.

Hypothyroidism Myxedema

ICD-10 quick links

Codes

For study support, terminology recognition, and documentation language.

E03.3 Postinfectious hypothyroidism E03.9 Hypothyroidism, unspecified E89.0 Postprocedural hypothyroidism E03.8 Other specified hypothyroidism E02 Subclinical iodine-deficiency hypothyroidism E03.1 Congenital hypothyroidism without goiter E03.0 Congenital hypothyroidism with diffuse goiter E03.2 Hypothyroidism due to medicaments and other exogenous substances
Common tests

Tests performed

TSH (elevated in primary) Free T4 (low) Anti-TPO antibodies (Hashimoto) CBC BMP Lipid panel Prolactin
Common medications

Recognize the drug and the class

Levothyroxine (T4) — standard treatment, start low and titrate Liothyronine (T3) — adjunct in refractory symptoms IV Levothyroxine (myxedema coma) IV corticosteroids (myxedema coma — adrenal insufficiency coexistence)
Related nursing diagnoses

NANDA diagnoses & care plans

Use these direct links to open nursing diagnoses and care-plan support related to Hypothyroidism.

Activity Intolerance Constipation Deficient Knowledge Imbalanced Nutrition
Official education links

Plain-language study support

Useful for plain-language reinforcement and quick review.

Hypothyroidism What is hypothyroidism?Hypothyroidism, or underactive thyroid, happens when your thyroid gland doesn't make enough thyroid hormones to meet your body's needs.Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example,… Thyroid Tests Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect your breathing, heart rate, weight, digestion, and moods.Thyroid tests check how well your thyroid is working. They are also used to diagnose and… Hyperthyroidism What is hyperthyroidism?Hyperthyroidism, or overactive thyroid, happens when your thyroid gland makes more thyroid hormones than your body needs.Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect y… Primary Ovarian Insufficiency What is primary ovarian insufficiency (POI)?Primary ovarian insufficiency (POI) happens when your ovaries stop working normally before you are 40.As you get older, fertility naturally decreases. This usually starts around age 40 or later. Menstrual periods may also become irregular as you transition to menopause. If you have POI, these changes happen earlier, before age 40. Sometimes POI can start as early as the te…