Endocrinology Consult

Endocrinologist Consult Subjective: - The patient presents for consultation due to significant fatigue, unexplained weight gain of approximately 10 kg over the last six months, and notable cold intolerance. She also reports menstrual irregularities, specifically oligomenorrhoea, with cycles extending to 45-60 days. - The patient, a 34-year-old female, reports that her fatigue started insidiously about eight months ago, gradually worsening to the point where it impacts her daily activities and work performance. The weight gain began shortly after the onset of fatigue and has been progressive despite no significant changes in her diet or activity level. She describes the cold intolerance as feeling perpetually cold even in warm environments, requiring extra layers of clothing. Menstrual cycles, previously regular at 28-30 days, have become increasingly irregular over the past year. She denies any associated symptoms such as hair loss, excessive sweating, or polydipsia/polyuria. She has not had any previous evaluations for these symptoms and has not attempted any treatments. - Past medical and surgical history: - Childhood asthma (resolved) - Appendectomy (age 12) - No previous endocrine diagnoses. - Current medications: - Multivitamin daily - None relevant to endocrine function. - Social history: The patient follows a typical Western diet with frequent consumption of refined carbohydrates and occasional fast food. Her physical activity level is low, consisting mainly of light walking. She reports occasional alcohol use (1-2 units per week) and no tobacco use. She is employed full-time as an administrator and lives in a stable housing environment. She reports moderate psychosocial stressors related to work-life balance. Family planning is currently not a concern. She holds no specific cultural health beliefs that impact her health choices. No known environmental exposures. - Known allergies: - Penicillin (rash) - No known allergies to iodine or radiologic contrast agents. Objective: - Vital signs: - Blood pressure: 128/82 mmHg - Heart rate: 72 bpm - Temperature: 36.8 °C - Weight: 85 kg - Height: 165 cm - BMI: 31.2 kg/m² - Physical examination findings: - Thyroid gland: Palpable, diffusely enlarged, non-tender, no nodules felt. No signs of goitre. - Skin: Dry, cool to touch. No acanthosis nigricans or vitiligo. No hirsutism or galactorrhoea. - No tremor observed. - Tanner stage V breast development. No gynecomastia or abnormal testicular size (not applicable to female patient). - Investigation results: - TSH: 8.5 mIU/L (reference range 0.4-4.0 mIU/L) - Free T4: 9.8 pmol/L (reference range 12.0-22.0 pmol/L) - Prolactin: 15 ng/mL (reference range 2-18 ng/mL) - Fasting Glucose: 5.2 mmol/L (reference range 3.9-6.1 mmol/L) - HbA1c: 5.4% (reference range < 5.7%) - Lipid Panel: Within normal limits. Assessment & Plan: 1. Hypothyroidism, likely primary - Assessment: The patient's symptoms of fatigue, weight gain, cold intolerance, and menstrual irregularities are highly suggestive of hypothyroidism. This is supported by the elevated TSH and low Free T4 levels. The palpable diffuse thyroid enlargement is consistent with a compensatory response in primary hypothyroidism. Exclusion of secondary causes will be considered with further investigations. - Differential diagnosis: - Primary Hypothyroidism (E03.9) - Subclinical Hypothyroidism (E03.1) - Autoimmune Thyroiditis (Hashimoto's) (E06.3) - Polycystic Ovary Syndrome (PCOS) (E28.2) – given menstrual irregularities, though labs are not typical. - Investigations planned: - Thyroid Peroxidase (TPO) antibodies to assess for autoimmune thyroiditis. - Thyroid Ultrasound to evaluate thyroid morphology and exclude nodularity. - LH, FSH to further assess menstrual irregularities. - Medical treatment plan: - Commence Levothyroxine (generic name) 50 micrograms orally once daily in the morning, 30-60 minutes before breakfast. - Aim for TSH in the lower half of the reference range (0.4-2.5 mIU/L). - Monitor for symptoms of hyperthyroidism (palpitations, anxiety, weight loss). - Medication is widely available through local pharmacies and public hospitals. - Lifestyle modifications advised: - Implement a balanced diet rich in whole grains, lean proteins, and fresh vegetables, reducing refined carbohydrates. - Engage in moderate-intensity physical activity for at least 30 minutes, 3-5 times a week, such as brisk walking or home-based exercises. - Consider stress management techniques like mindfulness or deep breathing exercises. - Follow-up plan: - Review in 6 weeks with repeat TSH and Free T4 levels. - Telephonic review initially, with an in-person clinic visit scheduled if levels are not optimal or symptoms persist. - Anticipated next steps include dose titration of levothyroxine based on TSH response. - Referrals made: - Referral to State Dietitian for comprehensive dietary advice and weight management strategies. Additional Notes: - Patient education provided regarding the chronic nature of hypothyroidism, the importance of consistent medication adherence, and the need to report any new or worsening symptoms, particularly those suggestive of over- or under-treatment. She was also educated on how to access her medication through the public healthcare system and the referral pathways. - Instructions for symptom monitoring: - Monitor for changes in fatigue levels, weight, and cold intolerance. - Keep a menstrual diary to track cycle length and flow. - Patient and family concerns addressed: The patient expressed concerns about potential long-term health implications and the impact on her fertility. She was reassured that with appropriate treatment, her symptoms should improve, and fertility can often be restored. The psychological wellbeing associated with chronic illness was acknowledged, and she was encouraged to seek support if needed.