546 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 ... Dermatomyositis #muscle ... Inclusion body myositis ... Hypothyroid myopathy #Muscle ... Cocaine-induced myopathy #Muscle
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... Progressive, symmetric muscle ... Inclusion Body Myositis ... , +Anti-dsDNA, Myositis ... BostonChiefs #Myositis
Idiopathic Inflammatory Myopathies (IIM's)

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

 • Overlap Myositis
IIM's) RASH + MUSCLE ... • Overlap Myositis ... Inclusion body myositis ... distal skeletal muscles ... infiltrate on muscle
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
PNS -> NMJ -> Muscle ... • Muscle weakness ... Inclusion body myositis ... anti-RNP - (Myositis ... • Muscle Biopsy
Causes of Rhabdomyolysis - Differential Diagnosis
 • Drugs & Toxins (Statins, alcohol, cocaine)
 • Direct Muscle
cocaine) • Direct Muscle ... exercise) • Muscle ... • Inflammatory Muscle ... Disease (myositis
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
Autoimmune Myositis ... greater level of muscle ... triad of ILD, myositis ... #Autoimmune #Myositis
Myositis on POCUS
Which of the following is the best choice for management for this patient?
Resolution: steroids
Myositis on POCUS ... this patient with myositis ... 922877690654359552 #Myositis ... ultrasound #MSK #Muscle
Penetrating Muscle Injury from Stab Wound on POCUS

What is the most likely etiology for this finding?
Resolution:
Penetrating Muscle ... in superficial muscle ... Differentiate from myositis ... , where the muscle ... Comparison vs Myositis
Myositis Ossificans in vastus intermedius on POCUS after trauma - Transverse View

Young male with MMA injury
Myositis Ossificans ... Answer: Myositis ... oval masses in muscle ... RJonesSonoEM #Myositis ... #thigh #POCUS #muscle
Myositis Ossificans in vastus intermedius on POCUS after trauma - Sagittal View

Young male with MMA injury
Myositis Ossificans ... Answer: Myositis ... oval masses in muscle ... RJonesSonoEM #Myositis ... #thigh #POCUS #muscle