18 results
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Diagnosis Framework ... - Hemolytic anemia ... PURPURA: Vasculitis ... #hematology #rheumatology ... #nonpalpable #dermatology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Megakaryopoiesis • Aplastic Anemia ... Autoimmune • ITP • SLE ... #Algorithm #Causes ... #Hematology
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Antiphospholipid-antibody syndrome ... lesions • Discoid lupus ... #dermatology ... #differential #diagnosis ... #rheumatology
Causes of Purpura or Easy Bruising in Children

Platelet count reduced, i.e. thrombocytopenia
 - Increased platelet destruction
Causes of Purpura ... systemic lupus erythematosus ... - Fanconi anaemia ... - Aplastic anaemia ... pediatrics #diagnosis
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
, Purpura, Urticaria ... ) Blood (75%): Anemia ... #Lupus #SLE #systemic ... #erythematosus ... #rheumatology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Microangiopathic hemolytic anemia ... microangiopathy: Thrombotic thrombocytopenic ... purpura (TTP), ... usually IgG) (e.g. lupus ... #hematology #anemia
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
→ Refer to hematology ... for workup, including ... hemolysis, deficiency anemia ... , Vasculitides, ... #Algorithm #hematology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Causes of Thrombocytopenia ... test, ANA (e.g., SLE ... changes), high MCV anemia ... #Causes #Workup ... #hematology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... Differential Diagnosis ... Non-autoimmune rheumatologic ... lymphopenia, low PLT • Anemia ... #Diagnosis #Rheumatology
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Hemolytic Anemia ... cardiac valve, vasculitis ... ARUPLabs #Hemolytic #Anemia ... #Algorithm #workup ... #hematology #testing