36 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 ... #Differential diagnosis ... of myopathy # ... Inflammatory #myopathies ... #Drug-induced myopathies
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
Mimic Inflammatory Myopathy ... or peripheral neurologic ... • Metabolic myopathies ... #mimics #diagnosis ... differential #causes #neurology
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... 5-15% of lupus myopathy ... BostonChiefs #Myositis #Myopathies ... #myopathy #differential ... #diagnosis #comparison
Idiopathic Inflammatory Myopathies (IIM's)

RASH + MUSCLE WEAKNESS → Consider idiopathic inflammatory myopathies (IIM's)

 • Overlap Myositis
Idiopathic Inflammatory Myopathies ... idiopathic inflammatory myopathies ... Any inflammatory myopathy ... #Inflammatory #Myopathies ... #IIMs #diagnosis
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
- Differential Diagnosis ... • Metabolic myopathies ... certain drug-induced myopathies ... #Differential #Diagnosis ... #neurology
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
Critical Illness Myopathy ... - Metabolic Myopathies ... - Inflammatory myopathy ... polymyositis, necrotizing myopathy ... #differential #diagnosis
Waddling (Myopathic) Gait on Physical Exam

Myopathic gait, also known as waddling gait, is caused by muscle
Waddling (Myopathic ... Physical Exam Myopathic ... #Waddling #Myopathic ... clinical #video #neurology
Inflammatory Myopathies
Dermatomyositis
 • Onset: Subacute
 • Pattern: Proximal
 • CK: Up to 50X ULN
 • Autoantibodies:
Inflammatory Myopathies ... Associated Features: Diagnosis ... over years, often diagnosed ... #Inflammatory #Myopathies ... #differential #diagnosis
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
• Inflammatory myopathy ... → Inflammatory myopathies ... Statin-induced myopathy ... Atorvastatin Diagnosis ... #diagnosis #management
Causes of Orthopnea - Differential Diagnosis Framework

 • Fear and Anxiety
 • Pleural Effusion
 • Ascites
- Differential Diagnosis ... GBS, CIDP - Myopathies ... #Differential #Diagnosis