57 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
infection • Lyme disease ... • Rheumatic fever ... Sarcoidosis #dermatology ... #rashes #differential ... #diagnosis #rheumatology
Erythematous Rashes - THE ALGORITHMIC APPROACH

Characterized by diffuse redness of the skin due to
capillary congestion, erythematous
redness of the skin ... , the differential ... includes Kawasaki disease ... #Diagnosis #Dermatology ... #Differential
Scarlet fever
• Delayed-type skin reactivity to pyrogenic exotoxin Requires prior exposure
• Diffuse erythematous eruption that generally
Scarlet fever • ... Delayed-type skin ... #diagnosis #clinical ... #photo #signs # ... symptoms
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... purple, hemorrhagic skin ... #Diagnosis #hematology ... #rheumatology # ... #nonpalpable #dermatology
Sarcoidosis 
Non-caseating granulomas (Composed of T-helper & inflammatory cells) 
Clinical:
 • Disease fatal in 10% of
inflammatory cells) Clinical ... : • Disease fatal ... neuropathies • Skin ... Sarcoidosis #Diagnosis #Symptoms ... #Signs #Pulmonary
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
life Causes and clinical ... and duration of symptoms ... angioedema Other symptoms ... - Headache, fever ... Urticaria #diagnosis #rheumatology
Hodgkin's Lymphoma vs Non-Hodgkin's Lymphoma - Comparison

Hodgkin's Lymphoma:
 • Epidemiology: young adults 20-30, older 50-70
 •
Clinical features ... Noncontiguous spread • Clinical ... involvement Differential ... oncology #diagnosis #differential ... #hematology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Dermatologic Manifestations ... Rarely dominate the clinical ... reticularis Differential ... vasculitis #Dermatologic ... rash #diagnosis #rheumatology
Adult-Onset Still's Disease
Clinical triad: Fever, Arthralgia/arthritis, Skin rash ± odynophagia
+ Biological inflammation: Increased neutrophils, Hyperferritinemia, decreased
Clinical triad ... : Fever, Arthralgia ... /arthritis, Skin ... fraction < 20% Differential ... management #treatment #rheumatology
Eosinophil Disorders Testing Algorithm
INDICATIONS FOR TESTING:
 • Peripheral blood eosinophilia/hypereosinophilia uncovered incidentally during medical evaluation or
organ-specific signs ... or symptoms (eg ... , skin or esophageal ... Disorders #Algorithm #Differential ... #diagnosis #hematology