22 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 ... Fibromyalgia #Hypothyroid ... #Drug-induced myopathies
Idiopathic Inflammatory Myopathies - 
Dermatomyositis (DM), Immune-Mediated Necrotizing Myopathy (IMNM), Antisynthetase Syndrome (ASS), Inclusion Body Myositis
Myopathies - ... Dermatomyositis ... Immune-Mediated Necrotizing Myopathy ... #Myopathies #Idiopathic ... #Myopathy #Comparison
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
That May Mimic Inflammatory ... Myopathy • Central ... • Metabolic myopathies ... Mitochondrial myopathy ... MuscleWeakness #Myopathy
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... Anti-Jo, +Anti-Mi2 Dermatomyositis ... 5-15% of lupus myopathy ... BostonChiefs #Myositis #Myopathies ... #myopathy #differential
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
Critical Illness Myopathy ... - Metabolic Myopathies ... toxoplasmosis - Inflammatory ... myopathy: dermatomyositis ... polymyositis, necrotizing myopathy
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
, toxic myopathy ... , hypothyroid-induced ... polymyositis, dermatomyositis ... myopathies such ... Statin-induced myopathy
Idiopathic Inflammatory Myopathies (IIM's)

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

 • Overlap Myositis
Myopathies (IIM's ... myopathies (IIM's ... myopathy that occurs ... myopathy affecting ... #Myopathies #IIMs
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
proximal weakness Myopathy ... mediated necrotizing myopathy ... Endocrinopathies: Hypothyroid ... • Metabolic myopathies ... certain drug-induced myopathies
Waddling (Myopathic) Gait on Physical Exam

Myopathic gait, also known as waddling gait, is caused by muscle
Waddling (Myopathic ... Physical Exam Myopathic ... waddling gait, is caused ... #Waddling #Myopathic
Abdominal Distention - Differential Diagnostic Algorithm
Ascites
Bowel Dilatation
Other Causes
Mechanical Obstruction
 • Adhesions 60%
 • Volvulus 3%
 •
Dilatation Other Causes ... Megacolon • Inflammatory ... • Ischemic Myopathic ... Scleroderma • Familial Myopathy