69 results
Myositis and Myopathies
#ESR #CK #Differential diagnosis of myopathy 
#Inflammatory #myopathies	#Dermatomyositis	
#muscle weakness
#Polymyositis	
#Inclusion body myositis
#Polymyalgia rheumatica	
#Fibromyalgia	
#Hypothyroid myopathy	
#Muscle stiffness
#Drug-induced
Myositis and Myopathies ... #Inflammatory #myopathies ... #Dermatomyositis ... #Drug-induced myopathies
Idiopathic Inflammatory Myopathies - 
Dermatomyositis (DM), Immune-Mediated Necrotizing Myopathy (IMNM), Antisynthetase Syndrome (ASS), Inclusion Body Myositis
Idiopathic Inflammatory Myopathies ... - Dermatomyositis ... #Inflammatory #Myopathies
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... Anti-Jo, +Anti-Mi2 Dermatomyositis ... BostonChiefs #Myositis #Myopathies
Inflammatory Myopathies
Dermatomyositis
 • Onset: Subacute
 • Pattern: Proximal
 • CK: Up to 50X ULN
 • Autoantibodies:
Inflammatory Myopathies ... Dermatomyositis ... #Inflammatory #Myopathies
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
- Metabolic Myopathies ... Inflammatory myopathy: dermatomyositis
Rhabdomyolysis - Differential Diagnosis and Management Summary

Trauma:
 • Immobilization, Crush iniury, Compartment syndrome, Electrical injury
Exertional:
 •
stroke, Metabolic myopathies ... (polymyositis/Dermatomyositis
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
• Metabolic myopathies ... Muscle Biopsy: Dermatomyositis ... certain drug-induced myopathies
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Inflammatory Myopathies ... , drug-induced myopathies ... levels • EMG DERMATOMYOSITIS ... 140 (amyopathic dermatomyositis ... of the time) Dermatomyositis
Rhabdomyolysis - Differential Diagnosis Framework and Management Summary

Causes of Rhabdomyolysis:
 • Trauma:
	- Immobilization
	- Crush injury
	- Compartment
- Metabolic myopathies ... : Polymyositis/Dermatomyositis
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
polymyositis, dermatomyositis ... → Inflammatory myopathies