16 results
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
<35 years old, e.g ... • Functional (e.g ... Infiltrative lesions (e.g ... Stalk Damage (e.g ... #Causes #OBGyn
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Thrombocytosis - Differential ... Diagnosis Secondary ... inflammatory disorders (e.g ... Myelodysplastic syndrome ... #hematology #secondary
Causes of Primary Amenorrhea - Differential Diagnosis Algorithm
No onset of menarche by age 16 with secondary
Diagnosis Algorithm ... Gonadal Dysgenesis (e.g ... Gonadal Dysgenesis (e.g ... • Functional (e.g ... #Causes #OBGyn
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
- Cirrhosis Syndrome ... - Malignancy (e.g ... CNS pathology (e.g ... pathology (e.g. ... #Diagnosis #Table
Causes of Growth Discrepancy: Large for Gestational Age - Differential Diagnosis Algorithm
Maternal Factors:
 • Multiparity
 •
Diagnosis Algorithm ... co-morbidities (e.g ... Genetic disorder (e.g ... Cerebral palsy secondary ... Causes #Obstetrics #OBGyn
Causes of Anemia with Low Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Decreased Heme Synthesis or
Iron Deficiency (Eg ... 18% • Anemia Secondary ... Other • e.g ... HgbE, HgbC, etc. ... #Causes #Hematology
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Diagnosis Algorithm ... Neoplastic / Hematologic ... Chronic Obstructive Pulmonary ... • Drug Abuse (e.g ... Chronic Fatigue Syndrome
Nail Disorders secondary to Systemic Diseases
Nail Fold Abnormality
 • SLE
 • Scleroderma
 • Dermatomyositis
Koilonychia - Spoon-shaped
Nail Disorders secondary ... halt nail growth (e.g ... • Nephrotic syndrome ... #dermatology #Differential ... #Diagnosis #Algorithm
Erythrocytosis - Polycythemia Differential Diagnosis Algorithm

Elevated Hemoglobin:
 • Males: Hb > 16.5 g/dL/HCT ≥ 49%
 •
Diagnosis Algorithm ... Polycythemia Vera Secondary ... Hypoxia-driven: Cardiac/pulmonary ... Paraneoplastic (e.g ... #hematology
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
Causes of Secondary ... Diagnosis Approach ... risk factors (eg ... hypertension (eg ... hypertension (eg