68 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
infection Malar ... rash • SLE ... infection • Lyme ... disease • Rosacea ... differential #diagnosis #rheumatology
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Causes of Anemia ... Inflammation, Chronic Infection ... (>100 fL) • B12 ... Diagnosis #Algorithm #Causes ... #Hematology
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
Myelofibrosis Infectious ... disorders • Celiac disease ... effect following treatment ... Iron deficiency anemia ... #Hematology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Megakaryopoiesis • Aplastic Anemia ... Megakaryopoiesis • B12 ... Autoimmune • ITP • SLE ... Vasculitis • Infection ... #Hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
purple, hemorrhagic skin ... - Hemolytic anemia ... Associated - SLE ... Differential #Diagnosis #hematology ... #rheumatology #
Non-HCV infectious mixed cryoglobulinemia vasculitis - Diagnosis, causes and management - French Vasculitis Study Group

< 5%
vasculitis - Diagnosis, causes ... manifestations - Skin ... neuropathy Treatment ... with refractory disease ... Cryoglobulinemia #Vasculitis #Rheumatology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
procedures - Infection ... test, ANA (e.g., SLE ... (CVID, WAS), (neurologic ... changes), high MCV anemia ... #Workup #hematology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
: SLE+++, Adult-onset ... Still disease, ... Drugs, Unknown cause ... Treatment: • ... #summary #rheumatology
Adult-Onset Still's Disease
Clinical triad: Fever, Arthralgia/arthritis, Skin rash ± odynophagia
+ Biological inflammation: Increased neutrophils, Hyperferritinemia, decreased
Clinical triad ... Arthralgia/arthritis, Skin ... Diaqnoses: • Infectious ... diagnosis #management #treatment ... #rheumatology
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Neoplastic / Hematologic ... • Anemia • ... Malignancy Infectious ... Arthritis • SLE ... Neurologic