44 results
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... - Bone marrow disease ... #Differential # ... Diagnosis #hematology ... #rheumatology #
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Joint Pain Rash ... infection Malar rash ... Palpable purpura ... #skin #rashes #differential ... #diagnosis #rheumatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Maculopapular rash ... reticularis Differential ... #rash #diagnosis ... #rheumatology
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
Causes of Thrombocytosis ... - Differential ... disorders • Celiac disease ... effect following treatment ... #Hematology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Thrombocytosis - Elevated ... → Refer to hematology ... Rebound effect from treatment ... Vasculitides, IBD, Celiac disease ... Diagnosis #Algorithm #hematology
Thrombotic Microangiopathy - TTP VS HUS

Big picture points : Often hard to differentiate the two entities,
Often hard to differentiate ... and first-line treatment ... thrombocytopenic #purpura ... thrombocytopenia #Comparison ... Diagnosis #Table #Hematology
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
muscle weakness, rash ... • Elevated CK ... Myopathies #myopathy #differential ... #diagnosis #comparison ... #rheumatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Involving the Skin - Differential ... Petechiae, Palpable purpura ... vasculitis • Erythema elevatum ... Vasculitis: • Behcet Disease ... #rheumatology #
Adult-Onset Still's Disease
Clinical triad: Fever, Arthralgia/arthritis, Skin rash ± odynophagia
+ Biological inflammation: Increased neutrophils, Hyperferritinemia, decreased
Adult-Onset Still's Disease ... arthritis, Skin rash ... fraction < 20% Differential ... diagnosis #management #treatment ... #rheumatology
Pigmented Purpuric Dermatoses (PPD) - Capillaritis

Group of chronic, benign, cutaneous eruptions characterized by the presence of
extremities Schamberg Disease ... - This iron causes ... brown tint of the rash ... Dermatoses #Dermatosis #differential ... #diagnosis #dermatology