9 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid Function ... normal T4 → Possibly ... • Low TSH, normal ... T4 +/- T3 → Primary ... TSH, high T4 +/
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
; in some cases, ... high; T4 normal ... free T4 normal; ... disease course #hypothyroid ... #hyperthyroid #
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
Causes == Primary ... Mellitus Liver Function ... failure/uremia TSH ... & T4: • Hypothyroidism ... #causes
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
Breast Discharge - Differential Diagnosis Algorithm
High Prolactin + Normal TSH
 • Microprolactinoma
 • Steroid Hormone Intake
Differential Diagnosis Algorithm ... High Prolactin + Normal ... • Primary Hypothyroidism ... Differential #Diagnosis #Algorithm ... Endocrinology #Causes
Gynecomastia - Differential Diagnosis Algorithm
No Testicular Mass on Ultrasound
 • Adrenal Neoplasm
 • Increased Extraglomerular Aromatase
Tumor Increased T4 ... , Decreased TSH ... • Hyperthyroidism ... T4 and TSH • ... #causes #endocrinology
Abnormal Lipid Profiles - Differential Diagnosis Algorithm

Increased Cholesterol and Triglycerides 
 - Genetic Causes
Abnormal Lipid Profiles ... Differential Diagnosis Algorithm ... Diabetes • Hypothyroidism ... Deficiency • Primary ... • Hypothyroid
Causes of Primary Amenorrhea - Differential Diagnosis Algorithm
No onset of menarche by age 16 with secondary
Causes of Primary ... Differential Diagnosis Algorithm ... Etiology - High FSH ... Hypothalamic: • Functional ... Hyperprolactinemia • Hypothyroidism
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
Causes of Secondary ... Differential Diagnosis Algorithm ... estrogen: • Functional ... compression) • Hypothyroidism ... #Causes #OBGyn