12 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Thyroid Function Tests ... : Work-up similar ... high T4 +/- T3 → Primary ... T3 → Central (secondary ... #algorithm #diagnosis
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Causes of Secondary ... salivary cortisol • Hypothyroidism ... • Hyperthyroidism ... Acromegaly #Secondary ... #Screening #Workup
Primary and Secondary Causes of Hypertension - Differential Diagnosis Algorithm
Primary (Essential) (95%) - Onset between age
Primary and Secondary ... Differential Diagnosis Algorithm ... Mislabelled - Repeatedly normal ... taken at home, work ... Differential #Diagnosis #Algorithm
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
Differential Diagnosis Algorithm ... Causes == Primary ... Liver Function Tests ... #secondary #systemic ... #causes
Abnormal Lipid Profiles - Differential Diagnosis Algorithm

Increased Cholesterol and Triglycerides 
 - Genetic Causes
Abnormal Lipid Profiles ... Differential Diagnosis Algorithm ... Diabetes • Hypothyroidism ... Deficiency • Primary ... #Dyslipidemia #Abnormal
Adrenal Insufficiency Diagnosis Algorithm - Evaluation of HPA Axis Response to ACTH

Early am cortisol < 3
Insufficiency Diagnosis Algorithm ... unclear (often the case ... Standard Stim test ... this indicates normal ... #Stimulation #Test
Causes of Primary Amenorrhea - Differential Diagnosis Algorithm
No onset of menarche by age 16 with secondary
Causes of Primary ... by age 16 with secondary ... age 14 without secondary ... Hyperprolactinemia • Hypothyroidism ... #Causes #OBGyn
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
Primary Adrenal ... aldosterone - Low in cases ... autoimmune-mediated primary ... Insufficiency #Evaluation #laboratory ... endocrinology #workup
Pruritus - No Primary Skin Lesion - Differential Diagnosis Algorithm

Blood Glucose:
 • Diabetes Mellitus
Liver Function Tests/Enzymes:
Pruritus - No Primary ... Liver Function Tests ... • Hyperthyroidism ... #Pruritus #secondary ... #causes
Adrenal Insufficiency Differential Diagnosis Algorithm
Clinical suspicion: Weakness, fatigue, nausea, musculoskeletal pain, dizziness, volume depletion, abdominal pain,
Weakness, fatigue, nausea ... ACTH) stimulation test ... baseline ACTH - Primary ... insufficiency • Low or normal ... baseline ACTH - Secondary