Goiter

Populations and Risk Factors

Iodine-deficient diets (most common cause worldwide; rare in North America due to iodized salt)
Autoimmune thyroid disease: Graves disease (toxic goiter) and Hashimoto thyroiditis (initial enlargement before atrophy)
Women affected more than men (approximately 4:1)
History of radiation to the head and neck
Pregnancy (increased thyroid hormone demand)
Medications: lithium, amiodarone (interfere with thyroid hormone synthesis)
Family history of thyroid disease
Smoking (thiocyanates in tobacco are goitrogens)

Iodine deficiency: Without adequate iodine, the thyroid cannot synthesize T3 and T4. The pituitary compensates by increasing TSH, which stimulates thyroid follicular cell hypertrophy and hyperplasia, producing diffuse enlargement.
Autoimmune (Graves disease): Thyroid-stimulating immunoglobulins (TSI) mimic TSH, continuously stimulating follicular growth and hormone overproduction. The gland enlarges diffusely with increased vascularity.
Autoimmune (Hashimoto thyroiditis): Lymphocytic infiltration causes initial diffuse enlargement (firm, rubbery "Hashimoto goiter") before progressive destruction leads to atrophy and hypothyroidism.
Multinodular goiter: Multiple autonomous nodules develop over years from cycles of stimulation and involution. Some nodules may become autonomous (producing thyroid hormone independently), causing toxic multinodular goiter.
Compression effects: Large goiters can compress the trachea (stridor, dyspnea), esophagus (dysphagia), recurrent laryngeal nerve (hoarseness), and superior vena cava (facial and upper extremity venous distension).
Palpation thyroiditis risk: Mechanical manipulation of the thyroid gland can release stored thyroid antigens, triggering destructive thyrotoxicosis — a transient but potentially dangerous surge of thyroid hormone.

Conspicuous, painless mass in the anterior neck, inferior to the larynx
Mass moves up and down visibly when swallowing (attached to the trachea via pretracheal fascia)
Hoarseness, persistent cough, or "choking sensation" (recurrent laryngeal nerve or tracheal compression)
Difficulty swallowing (dysphagia from esophageal compression)
Distension of neck and upper extremity veins (SVC compression — Pemberton sign)
Signs of underlying thyroid dysfunction: hypothyroidism (weight gain, fatigue, cold intolerance) or hyperthyroidism (tremor, anxiety, weight loss, tachycardia)

Thyroid storm (undiagnosed hyperthyroid goiter): Extreme tachycardia, high fever, delirium, cardiovascular collapse — medical emergency; call 911
Acute airway obstruction: Sudden hoarseness, inspiratory stridor, difficulty breathing — emergency referral
Rapid growth or hard, fixed nodule: May indicate thyroid carcinoma — urgent medical referral
Facial swelling with upper extremity venous distension: SVC syndrome — urgent referral

Local contraindication: Deep massage to the anterior neck and immediate thyroid vicinity must be avoided. The thyroid gland is superficial and vulnerable to mechanical injury.
Palpation thyroiditis risk: Mechanical manipulation of the gland can release antigens triggering destructive thyrotoxicosis — do not palpate, compress, or apply sustained pressure to the thyroid area
Positioning: Large goiters may compress the airway. Clients may be uncomfortable lying flat and require semi-supine positioning with the head slightly elevated
Underlying thyroid status determines systemic precautions: Hyperthyroid goiter — apply Graves disease precautions (osteoporosis risk, cardiac caution, radioactive iodine isolation). Hypothyroid goiter — apply Hashimoto/hypothyroidism precautions (cold intolerance, fatigue, tissue quality).
Relaxation massage addressing secondary neck and shoulder tension from postural compensation is appropriate as long as the anterior thyroid area is avoided

Category: A7 Systemic Conditions (Endocrine)
Thyroid storm (extreme tachycardia, high fever, delirium) is a medical emergency — may be triggered by stress, infection, or trauma in undiagnosed hyperthyroid goiter
Palpation thyroiditis as a contraindication to anterior neck massage is a high-yield point
The mass moves with swallowing — distinguishing assessment finding for thyroid-origin masses
Differentiate toxic (hyperthyroid) from nontoxic (euthyroid/hypothyroid) goiter
Recognize compression symptoms: stridor, dysphagia, hoarseness

Deep massage to the anterior neck and thyroid vicinity is locally contraindicated due to risk of palpation thyroiditis
Mechanical manipulation of the gland can release antigens triggering destructive thyrotoxicosis
Thyroid storm (extreme tachycardia, high fever, delirium) is a life-threatening emergency — refer immediately
Large goiters may compress the airway — clients may require semi-supine positioning
The mass moves up and down with swallowing — a distinguishing assessment finding for thyroid-origin masses
Underlying thyroid status (hyper- vs. hypothyroid) determines additional systemic precautions