14 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
malignancies • Anemia ... inflammatory disorders (e.g ... . autoimmune, TB ... Myelodysplastic syndrome ... Diagnosis #Causes #hematology
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
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
underlying disease (eg ... • Infection (eg ... with leukopenia, anemia ... Diagnosis #Management #Hematology ... #Rheumatology
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 Purpura or Easy Bruising in Children

Platelet count reduced, i.e. thrombocytopenia
 - Increased platelet destruction
- SLE (systemic ... infiltration (e.g ... Rare disorders, e.g ... - Vasculitis, e.g ... #Causes #peds #pediatrics
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
activate the immune system ... infection • Autoimmune ... Often Secondary to Autoimmune ... tissue disorder (e.g ... . systemic lupus
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
disease • Non-autoimmune ... • Malignancy (e.g ... . hematologic) ... Endocrine disorders (e.g ... lymphopenia, low PLT • Anemia
Causes of Neutropenia - Differential Diagnosis
Neonate:
 - Infection - by far the most common cause
 -
Constitutional disorders, eg ... neutropenia, Kostmann syndrome ... Chediak-Higashi syndrome ... Megaloblastic anemia-rare ... diagnosis #causes #hematology