8 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Associated with Joint ... Pain Rash ... Dermatomyositis Erythema chronicum ... • Rheumatic fever ... Amyloidosis • Eosinophilic
Approach to Joint Pain - Diagnostic Framework

1) Chronicity
2) Inflammatory vs Non-Inflammatory
3) Number of Joints Involved

1) Chronicity:
Pain - Diagnostic ... acute rheumatic fever ... • Chronic - Think ... = RA, SLE, psoriatic ... #Joint #Pain #MSK
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
• Rheumatic fever ... tuberculosis) • Fungi, secondary ... arthritis • SLE ... Symmetrical: • RA • SLE ... #Diagnosis #MSK
Pathologic / Fragility Fractures - Differential Diagnosis Algorithm 
Tumours
 - See Bone Lesions Scheme
Paget's Disease
 -
Differential Diagnosis Algorithm ... Tumours - See ... to Chronic Renal ... Ricketts - Diffuse Pain ... Fractures #Pathologic #MSK
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
infections, bone pain ... , fever, joint pain ... • (Peripheral eosinophilia ... bone marrow and secondary ... Lymphadenopathy • HSM • Fevers
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Fever/Chills/Joint ... pain/Night sweats ... arthritis - SLE ... Osteosarcoma - Eosinophils ... differential #diagnosis #msk
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
diseases, such as SLE ... vesicular eruption • Joints ... tract: Abdominal pain ... , asthma, chronic ... Palpable purpura, joint
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
• EGPA: - Eosinophilia ... , asthma, chronic ... vesicular eruption - Joints ... Vasculitis: • Fevers ... vasculitis, and SLE