7 results
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
; in some cases, ... iodine uptake; thyroid ... disease course #hypothyroid ... #hyperthyroid # ... differential #diagnosis
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... Function Tests ... T4 +/- T3 → Primary ... symmetrically enlarged thyroid ... Hyperthyroidism #algorithm
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
• Insomnia Primary ... goiter • Toxic diffuse ... T3 • ↑ Free T4 ... hyperthyroidism #causes ... #diagnosis #differential
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
Diagnosis Algorithm ... Causes == Primary ... Mellitus Liver Function ... failure/uremia TSH ... & T4: • Hypothyroidism
Pruritus - No Primary Skin Lesion - Differential Diagnosis Algorithm

Blood Glucose:
 • Diabetes Mellitus
Liver Function Tests/Enzymes:
Pruritus - No Primary ... Mellitus Liver Function ... failure/uremia TSH ... & T4: • Hypothyroidism ... #causes
Hypothyroidism - Differential Diagnosis Algorithm
Central Hypothyroidism
 • Isolated TSH Deficiency
 • Panhypopituitarism
Thyroid Hormone Resistance
Iatrogenic
Primary Hypothyroidism
 -
Hypothyroidism - Differential ... Diagnosis Algorithm ... Hypothyroidism • Isolated TSH ... Resistance Iatrogenic Primary ... endocrinology #causes
Causes of Primary Amenorrhea - Differential Diagnosis Algorithm
No onset of menarche by age 16 with secondary
Causes of Primary ... Amenorrhea - Differential ... Diagnosis Algorithm ... Etiology - High FSH ... Hypothalamic: • Functional