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Taking a History from a Thyroid Patient - Clinical Posting Guide

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1. Biodata

• Age and sex matter: thyroid disorders are far more common in women; Graves' disease peaks in young women; multinodular goiter tends to occur in older patients.
• Occupation: radiation exposure (e.g., radiographers, nuclear workers) is a risk factor for thyroid cancer.

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2. Chief Complaint (Presenting Complaint)

• Swelling in the neck / lump in the front of the neck
• Weight loss or weight gain
• Palpitations
• Feeling hot all the time / feeling cold all the time
• Fatigue or weakness
• Change in bowel habits
• Eye changes (protrusion, double vision)
• Voice change or difficulty swallowing (compressive symptoms)
• Anxiety, mood change, or depression

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3. History of Presenting Complaint (HPC)

A. If Hyperthyroid Features Are Present

• Weight loss - despite increased appetite?
• Heat intolerance and excessive sweating
• Fatigue, lethargy, general weakness

• Nervousness, anxiety, irritability, emotional lability
• Fine tremor of hands
• Insomnia (extreme fatigue but unable to sleep)
• Confusion or psychosis (in severe cases)

• Palpitations (sinus tachycardia, atrial fibrillation)
• Dyspnea, chest pain
• Widened pulse pressure

• Diarrhea, increased frequency of bowel motions
• Yellow discoloration of eyes (jaundice - rare)

• Protrusion of eyes (exophthalmos), staring appearance
• Double vision (diplopia), eye irritation, dry eyes
• Lid lag

• Thin skin, thin hair, hair loss
• Proximal muscle weakness (difficulty climbing stairs, rising from chair)
• Pretibial myxedema (waxy, itchy skin over shins - Graves' disease)
• Onycholysis (nails separating from nail bed)

• Oligomenorrhea (scanty periods), menstrual irregularity
• Decreased libido; gynecomastia in men

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B. If Hypothyroid Features Are Present

• Weight gain despite poor appetite
• Cold intolerance
• Fatigue, lethargy, feeling sluggish

• Poor concentration, memory impairment
• Depression
• Proximal muscle weakness

• Bradycardia, angina
• Dyspnea (from pericardial/pleural effusions)

• Constipation

• Dry, coarse skin
• Hair thinning or hair loss
• Lateral eyebrow thinning

• Menorrhagia (heavy periods)
• Infertility

• Carpal tunnel syndrome symptoms (tingling/numbness in hands)
• Muscle cramps

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C. If Neck Swelling Is the Main Complaint

• Onset and duration: When did the swelling first appear? Was it sudden or gradual?
• Rate of change: Growing rapidly? (Rapid growth raises concern for malignancy or hemorrhage into a cyst)
• Pain: Is it painful? Sudden painful enlargement may indicate hemorrhage into a pre-existing cyst.
• Movement on swallowing: Thyroid swellings typically move up on swallowing.
• Associated voice change: Hoarseness may indicate recurrent laryngeal nerve involvement (cancer concern).
• Difficulty swallowing (dysphagia): Compressive symptoms from large goiter.
• Breathing difficulty (stridor): Large goiter compressing the trachea.
• Compressive symptoms increase with size and are more common at or above the thoracic inlet.

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4. Past Medical History (PMH)

• Previous thyroid disease, thyroid surgery, or radioiodine treatment
• History of radiation exposure to neck (risk factor for thyroid cancer)
• Autoimmune disorders (Type 1 DM, Addison's disease, vitiligo, pernicious anemia - associated with Hashimoto's and Graves')
• History of iodine deficiency (endemic area?)
• Neck surgery or prior FNAC (fine-needle aspiration cytology)

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5. Drug History

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6. Family History

• Thyroid disease in first-degree relatives (Graves', Hashimoto's, thyroid cancer)
• First-degree relative with thyroid cancer increases likelihood of malignancy in a nodule (Scott-Brown's)
• Autoimmune disease in the family
• MEN syndromes (MEN2 is associated with medullary thyroid carcinoma)

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7. Social History

• Smoking status: smoking is strongly associated with Graves' ophthalmopathy
• Alcohol intake
• Dietary history: iodine intake (seafood, iodized salt); excessive seaweed/kelp ingestion
• Occupation: radiation or chemical exposure
• Travel history: areas of endemic goiter (iodine-deficient regions)
• Stress history (can precipitate or worsen thyroid disorders)

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8. Review of Systems (Systemic Enquiry)

• Cardiovascular: palpitations, chest pain, ankle swelling
• Respiratory: breathlessness, stridor
• Gastrointestinal: appetite, weight, bowel habits
• Neurological: tremor, weakness, tingling
• Ophthalmological: eye protrusion, double vision
• Dermatological: skin/hair changes
• Gynaecological: menstrual pattern, fertility

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9. Summary of Key Differentials to Keep in Mind While Taking History

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10. A Useful Mnemonic for Hyperthyroid Symptoms: "WEIGHT LOSS"

• W - Weight loss (with increased appetite)
• E - Eye changes (exophthalmos, lid lag)
• I - Irritability / anxiety / insomnia
• G - Goiter (neck swelling, bruit)
• H - Heat intolerance / sweating
• T - Tremor / tachycardia / palpitations
• L - Loose motions (diarrhea)
• O - Oligomenorrhea / reproductive changes
• S - Skin/hair thinning, muscle wasting
• S - Sweating, systolic hypertension

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• Guyton and Hall Textbook of Medical Physiology
• Tintinalli's Emergency Medicine: A Comprehensive Study
• Scott-Brown's Otorhinolaryngology Head & Neck Surgery, Vol 1
• Frameworks for Internal Medicine
• Lippincott Illustrated Reviews: Pharmacology