255 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 #muscle weakness ... #Hypothyroid myopathy ... #Drug-induced myopathies
Idiopathic Inflammatory Myopathies (IIM's)

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

 • Overlap Myositis
Idiopathic Inflammatory Myopathies ... RASH + MUSCLE WEAKNESS ... idiopathic inflammatory myopathies ... Severe proximal weakness ... #Inflammatory #Myopathies
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... symmetric muscle weakness ... symmetric muscle weakness ... Fever, No muscle weakness ... BostonChiefs #Myositis #Myopathies
Waddling (Myopathic) Gait on Physical Exam

Myopathic gait, also known as waddling gait, is caused by muscle
Waddling (Myopathic ... Physical Exam Myopathic ... caused by muscle weakness ... #Waddling #Myopathic
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
Proximal Muscle Weakness ... Mimic Inflammatory Myopathy ... • Metabolic myopathies ... Mitochondrial myopathy ... MuscleWeakness #Myopathy
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
Elevation (Pain > Weakness ... Critical Illness Myopathy ... Chronic Causes (Weakness ... PROXIMAL MUSCLE WEAKNESS ... - Metabolic Myopathies
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... Myopathy: ... mediated necrotizing myopathy ... • Metabolic myopathies ... certain drug-induced myopathies
Causes of Orthopnea - Differential Diagnosis Framework

 • Fear and Anxiety
 • Pleural Effusion
 • Ascites
Diaphragmatic weakness ... GBS, CIDP - Myopathies
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
proximal myalgia and weakness ... symmetric muscle weakness ... • Inflammatory myopathy ... → Inflammatory myopathies ... Statin-induced myopathy
Inflammatory Myopathies
Dermatomyositis
 • Onset: Subacute
 • Pattern: Proximal
 • CK: Up to 50X ULN
 • Autoantibodies:
Inflammatory Myopathies ... Associated Features: Weakness ... #Inflammatory #Myopathies