35 results
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Megakaryopoiesis • Aplastic Anemia ... Toxic Damage (e.g ... Displacement (e.g ... Non-lmmune: • HELLP Syndrome ... Foreign Surface (e.g
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
(usually IgG) (e.g ... (usually IgM) (e.g ... deficiencies (e.g ... Membrane defects (e.g ... differential #diagnosis #hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Thrombocytosis): • Acute ... malignancies • Anemia ... inflammatory disorders (e.g ... . autoimmune, TB ... Myelodysplastic syndrome
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
infiltration (e.g ... Marrow suppression (e.g ... Index > 3: • Acute ... • Hemolysis: Autoimmune ... Intrinsic RBC defects (e.g
Nail Disorders secondary to Systemic Diseases
Nail Fold Abnormality
 • SLE
 • Scleroderma
 • Dermatomyositis
Koilonychia - Spoon-shaped
Disorders secondary to Systemic ... Iron deficiency anemia ... halt nail growth (e.g ... • Nephrotic syndrome ... #Secondary #dermatology
Neuromyelitis Optica (NMO) - Clinical Manifestations
 • Optic neuritis: Reduced visual acuity, ranging from mild to
(e.g. oculomotor ... AQP4-lgG disease; e.g ... Myositis, Comorbid autoimmune ... disorders (Systemic ... diagnosis #neurology #symptoms
BEE Syndromes - Non-inflammatory Causes

Immune-mediated conditions affecting the Brain, Eye, and Ear

Visual or auditory symptoms in
Visual or auditory symptoms ... conjunction with symptoms ... central nervous system ... an underlying autoimmune ... skull neoplasms (e.g
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Neoplastic / Hematologic ... • Anemia • ... Hepatitis • HIV Autoimmune ... • Drug Abuse (e.g ... Chronic Fatigue Syndrome
Causes of Acute Pericarditis:

Infectious;

Viral: 
Adenovirus 
Coxsackie virus A and B 
Echovirus 
Epstein-Barr virus 
Hepatitis 
Human immunodeficiency
Causes of Acute ... Cardiac injury (e.g ... Pericardial perforation (e.g ... pericarditis) Uremia ... Systemic lupus
Approach to Headaches - Differential Diagnosis Algorithm

Red flags (PHANTOMS):
 • Pattern change, progressively worse, papilledema
 •
pupil (AACG) • Systemic ... symptoms and signs ... (e.g., fever, myalgia ... CNS infection (e.g ... arteritis • Acute