Conditions

Hypothyroidism: symptoms and tests

4.6% in the US (0.3% overt, 4.3% subclinical) ↗︎

Key facts about hypothyroidism

  • TSH is the most sensitive test for thyroid dysfunction
  • Most patients feel well when TSH is normalized ↗︎
  • Symptoms often attributed to thyroid may have other causes
  • T3 and reverse T3 testing is rarely clinically useful ↗︎ ↗︎

Common symptoms

Many of these also occur in hypothyroidism, which is why the two are easily confused.

Fatigue Weight gain Cold intolerance Constipation Dry skin Hair loss Brain fog Depression Muscle weakness

Tests to ask your doctor about

  • TSH
  • Free T4
  • TPO Antibodies
Check your symptoms Other conditions
Important

This page is for educational purposes only. It cannot diagnose medical conditions. Always consult a healthcare provider for proper evaluation and testing.

Medically reviewed · Last reviewed