Hashimoto thyroiditis

• early stage transient hyperthyroidism
• progresses to subclinical hypothyroidism
• then finally overt hypothyroidism

This patient has clear signs of hypothyroidism (dry skin, brittle hair, periph edema, temp intolerance, weight gain, bradycardia, lethargy, etc)

Most common cause of noniatrogenic hypothyroidism

The most common cause of hypothyroidism in developed countries is Hashimoto’s thyroiditis. In developing countries, it’s iodine deficiency.